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Absence of lightPlants need light to make food to surive.Without light, plants will die.Pond water has more nutrients than tap water.
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TimestampNameIndex No.1a) [1]1b) [Claim]1b) [Evidence-Reasoning][1]1c) [Claim]1c) [Evidence-Reasoning][1]Total
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4/17/2016 17:58:28Amanda16Lack of sunlight1It was not able to make food There was no light for the plant to photosynthesize and make food thus the plant died due to lack of food1Pond water has more nutrients and mineral salts than pond waterThe roots of A and C will absorb the pond water and tap water respectively and A will receive more nutrients and mineral salts from the absorbed pond water and thus grow healthier.13
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4/15/2016 22:08:33Zayn Lau20They were kept in the dark and did not receive any sunlight.0Plants which cannot receive sunlight cannot produce its own food and will die.When the plants were kept in the dark, they could not receive sunlight so they cannot make their own food and they will die without food.1Plant grows better in water with more nutrients.As pond water is taken from the pond, the water have a lot of nutrients from dead animals which have decomposed in the water so plants can growmore healthily in the pond water.12
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4/16/2016 11:44:34Ngieng Xin Yi30They were kept in the dark.0Hydrilla cannot make food without sunlight.the hydrillas were kept in the dark, thus they could not make food and starved to death.1minerals and nutrients help plants grow more healthily. Pond water is richer in minerals and nutrients than tap water, thus the hydrilla in beaker A grew more healthily than those in beaker C12
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4/16/2016 17:03:03Gladys31They were kept in the dark.0Plants need light to photosynthesise.Beaker b and d died as they were kept in the dark, thus cannot photosynthesis and so was lack of food and died. So, it started to decay.1There is more natural minerals that will help plants grow better in pond water than in tap water.The hydrilla in Beaker A was submerged in pond water and the pond water had certain minerals that help the hydrilla grow better compared to Beaker C which was submerged in tap water. Tap water has lesser minerals that pond water so the hydrillar in beaker C did not grow as well as the hydrilla in beaker A.12
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4/16/2016 21:44:44Yong Xuan2The absence of the daylight/sunlight caused the hydrilla in Beaker B and D to decay.1Plants need to absorb sunlight and make food in order to survive.No food is available for the plant. Without the food, plant will not be able to survive. When the plants die, as shown in the graph, detrivores breaks the dead plant into smaller substances, and decomposers breaks the dead remainings of the plant into simpler substances such as carbon dioxide and water.1pond water contain alot of nutrients which helps the plant to grow better.the height of plant A is taller than Plant C so it grows better than C02
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4/17/2016 11:16:38Keven18Lack of sunlight1Both died due to lack of sunlightas they were not exposed to it and could not photosynthesize and produce food 1Hydrilla in A grew better as they grow in pondsHydrilla grows in pond with pond water better that has nutrients and minerlas from other plants and aniamls compared to pure tap water02
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4/17/2016 11:32:22Lee Yun Jia23The place that those hydrillas were decayed were kept in the dark.0Without sunlight,the plant cannot photosynthesize.Without photosynthesis,the plant cannot make its own food and will eventually die.Then the decomposer would decay the plant. 1Pond water has more nutrients and mineral salts.Tap water has a lesser amount of nutrients then the tap water because tap water needs to go through a filtration process so the pond water is more suitable than the pond water for the hydrillas to live in.12
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4/17/2016 15:33:10there was no light 0plants need light to photosynthesis to make food for it to survivethe hydrilla in beaker B and D could not receive any light, hence it could not photosynthesis and make food. without food, the hydrillas would die . when it dies, detritivores would break the dead plant into smaller pieces and decomposers breaks down the remaining of the plant into smaller substances such as carbon dioxide and water.1beaker A contains pond water but beaker B contains tap water2the pond water contains more nutrients from the plants and animals that have once decomposed in the water.1`12
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4/17/2016 17:18:05Yeo Qin Ying39Decomposers.0There was no sunlight for the hydrilla to photosynthesize so gradually it died.When it died, the decomposers started to decompose the hydrilla, thus the hydrilla was decayed.1The pond water contained more nutrients than the tap water.Thus, with more nutrients in the pond water, the hydrilla will be able to grow more healthily than the hydrilla in the tap water.12
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4/16/2016 10:08:15Jun weng11It was exposed to darkness which did not grow and decayed.0Plants need light to make food through the process of photosynthesis.Without light,the plant will decay .It turned decayed when it was dark.0.5Pond water has more minerals than tap water so plants can grow better in pond water compared to tap water.The plant in pond water grew taller than the one with tap water.11.5
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4/16/2016 21:21:03Chua Jia Xu12The hydrilla in beaker B and D were kept in the dark.0The hydrilla needs sunlight to make food and grow.As the hydrilla is kept in the dark, there will be no sunlight for the plant to make food. Thus, the hydrilla will decay.0.5Pond water has more nutrients than tap water.The hydrilla will use the nutrients from the pond water to grow better.11.5
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4/17/2016 17:38:48Jayanth3The lack of light.1Plants need light to photosynthesize and make food for survival.The hydrilla which was exposed to daylight did not decay while the plant which kept in the dark decayed0.5Pond water has more carbon dioxide than tap waterThe hydrilla in pond water grew better than the hydrilla in tap water01.5
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4/15/2016 22:50:01Lucas Lau21Presence of sunlight0Without sunlight, plants cannot photosynthesise and will die.The hydrilla in beaker B and D were kept in the dark so there was no sunlight and it could not photosynthesise. Therefore, decomposers like fungi and bacteria caused the hydrilla to decay and decompose.1Hydrilla natural habitat is pond.Hydrilla are found near pond and since beaker A has pond water but C has tap water, hydrilla in beaker A will grow better than the ones in C.01
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4/16/2016 13:49:09Christine10The beakers were kept in the dark.0Plants cam photosynthesize in the presence of sunlight.The plants kept in the dark cannot make food so they will die (decay) due to starvation. The plants exposed to sunlight could photosynthesize so it will survive and continue to grow. 1The plants can photosynthesize faster when exposed to more sunlightBeaker A was exposed to more sunlight compared to Beaker C so hence the plant in Beaker A received more sunlight and made more food so it grew taller and healthier than the plant in Beaker C.01
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4/16/2016 13:57:45Ng Kee Chew28The presence of sunlight0Decomposition takes place when there is no lightB and D were not exposed to light and they began to decay in just a few days but A and C were exposed to light and continued growing.0Pond water is more suitable for hydrilla than tap waterPond water contains nutrients but tap water does not contain nutrients.11
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4/16/2016 14:23:44Ranen32Place of the Hydrilla0Plants need light for photosynthesis B was kept in the dark so the Hydrilla could not photosynthesis and died1Pond water is more suitable for the Hydrilla to live in than tap water.The Hydilla in A is living in pond water while the Hydrilla in C is living in tap water.01
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4/16/2016 14:57:24renesh dharma33whether the hydrilla was kept in the dark or not0the hydrilla will not be able to make foodphotosynthesis requires light.since the hydrilla is kept in the dark it cannot photosynthesyse and make food so it will die due to lack of food and decay101
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4/17/2016 12:22:31Liow Xing Hui24They were kept in the dark0They cannot make foodas they were not exposed to sunlight and without food, they died.1It was kept in water of its habitatwhich is pond water so it grew better than the one in beaker C, which it kept in tap water.01
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4/17/2016 13:13:06Pearl4The factor was that both plants were kept in the dark.0The hydrillas need sunlight to survive.Without sunlight, the hydrilla will not be able to photosynthesis as photosynthesis needs sunlight and oxygen. Without photosynthesizing, the plant would not be able to make food and will thus die off.1The hydrilla grows more healthily with pond water than tap water.The pond water is more clear than tap water, thus the hydrilla can receive more sunlight and the rate of photosynthesis will be faster than the hydrilla in the tap water, causing it to have more food and it will grow healthier. 01
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4/17/2016 14:24:40Chong Rui Sian 8The hydrilla in beaker B and D were kept in the dark.0The hydrilla in beaker A and D decayed as there was no light compred to the hydrilla in beaker A and C.The hydrilla in A and C grew taller after 8 weeks as shown in the graph instead of decaying.0pond water has more nutrients in it compared to the tap water.The hydrilla in Beaker A grew 2.5 cm over the period of 8 weeks but the hydrilla in beaker C grew only 0.4 cm over the period of 8 weeks. 11
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4/17/2016 19:26:14Kelly Giam 17They were both kept in the dark.0Plants will wilter and die when they cannot make food.Plants need light to photosynthesize. When there is no light, the leaves cannot make food and the stem cannot transport food to the other parts of the plant. As a result, the plants will wilter and die, due to the lack of food.1The pond water allowed more sunlight to pass through it compared to the tap water.The intensity of light will affect the rate of photosynthesis. The hydrilla in beaker A received more sunlight so it will photosynthesize more, causing it to grow more healthily than the one in beaker B.01
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4/17/2016 19:45:19alson1the hydrillas are placed in the dark.0Fungi and bacteria are decomposers.As fungi and bacteria grow better in the dark than they do inthe light, they decomposed the plant faster in the dark.0plants need nutrients to help them grow.as pond water has more nutrients than tap water, the plants in the pond water grew taller than the plants in the tap water.11
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4/15/2016 22:06:33HorEasonThey were kept in the dark so they cannot absorb sunlight and photosynthesize.0Plants need sunlight to photosynthesize and produce food.There was no sunlight in the dark for the hydrillas in beakers B and D to photosynthesize and produce food.0.5Plants grow better in pond water than to tap water.Plant A is placed in pond water while Plant C was placed in tap water so Plant A grew better than Plant C.00.5
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4/16/2016 12:22:54Duncan25They were both kept in the dark.0Without sunlight, the hydrilla is unable to photosynthesize.The hydrillas in both Beaker B and D were kept in the dark and did not receive any sunlight. Thus, the hydrillas could not photosynthesize due to the absence of light.0.5Water plants grow healthier in pond water than in tap water.The hydrilla in Beaker A was left in pond water to grow while the hydrilla in Beaker C was left in tap water to grow.00.5
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4/16/2016 15:20:54Chua Yu Heng13The hydrilla in Beaker B and D was not exposed to sunlight but kept in the dark.0The hydrilla needs sunlight to make food.The hydrilla was kept in the dark and could not absorb any sunlight to make food so it decayed after a period of time.0.5The hydrilla grows better in pond water.The water used in Beaker A was pond water and the water used in Beaker C was tap water. Pond water is more suitable than tap water for the hydrilla to grow in so the hydrilla in Beaker A grew more healthily than those Beaker C.00.5
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4/16/2016 19:09:50Ng Hong Xun26They were kept in the dark.0Plants cannot photosynthesis with out light.Hydrilla B and D were kept in the dark and did no have any light so they could not photosynthesis and lacked food and decayed.0.5Hydrillas grow better in pond water than tap water.Hydillas in A was exposed in pond water but those in C was exposed to tap water hence those in A would grow better.00.5
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4/17/2016 11:05:12Soh Lay Yee35Exposure to daylight0Hydrilla plants in beakers B and D were unable to make food as the hydrilla plants in the beakers B and D were not exposed to sunlight ,the plants were unable to photosynthesis .0.5The hydrilla plants grow better in pond water than tap waterthe hydrilla plants that grew in beakers A and B , which has pond water grew better than hydrilla plants that grew in beakers C and D , which contained tap water.00.5
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4/15/2016 22:35:24Chan Rui Heng5The amount of light received by the hydrilla.0Set - ups B and D were kept in the dark.From the table above, set - ups B and D decayed after 5 weeks when situated in the dark.0There was more light in the area a was placed in.As A receives more light, it can photosynthesize more and make more food, and with the abundance of food, A will grow better.00
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4/15/2016 23:47:06Jasper37they were both kept in the dark which is the condition that is favourable for decomposers to grow
0decomposers grow well in dark placesthey were placed in dark places so they were decomposed by the decomposers growing there0they are placed in a place where there is sufficient sunlightthere is sunlight for it to make food00
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4/16/2016 12:29:03Yeo Yi Da40The hydrilla in Beaker B and D were kept in the dark.0Only Beaker B and D were kept in the dark .Only hydrillas in Beakers B and D turned decay while hydrillas in Beakers A and C did not turned decay when they were exposed to daylight.0Pond water is more effective for plants to grow rather than tap water.The hydrilla in beaker A was placed in pond water and it grew taller than the hydrilla in beaker C which was placed in tap water.00
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4/16/2016 12:43:23Chong Yong Fu9Hydrilla in beaker B and D are kept in the dark.0Hydrilla prefers be exposed to daylight to be kept in the dark.Beaker A and C which are exposed to daylight did not 0Hydrilla prefers pond water to tap water.Both beaker A and C are exposed at 20'C to daylight. The only difference is that the water in beaker A is pond water, while the water in beaker C is tap water.00
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4/16/2016 15:31:14Ng Yea Nin29They were kept in the dark.0Darkness encourages decomposers.When the hydrillas in Beaker B and D were kept in the dark, they decayed while those in A and C which were exposed to sunlight did not decay.0Pond water is better than tap water for hydrillas.The hydrilla in Beaker A grew more healthily than that in Beaker C.00
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4/16/2016 18:20:15Lee Jun Wei Travis22Kept in the dark.0Decay grows at places which are dark.Decay grew on the plants B and D and not A and C. Both B and D were kept in the dark while A and C were exposed to daylight but all of them were exposed to 20°C. This proves that the common factor that caused the plants B and D to decay was that they were both kept in the dark.0The natural habitat of the hydrilla is at the pond.The hydrilla that grew in pond water grew better than the hydrilla that grew in tap water. Since the natural habitat of the hydrilla is at the pond, the hydrilla would thus grow better in pond water than in tap water.00
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4/17/2016 11:15:11Ng Jing Le27It was placed in the dark.0Decomposes like fungi and bacteria are often present when the conditions are moist and dark.Since both set -up B and D's condition was moist and dark, fungi and bacteria wil be present, thus decomposing the hydrilla. 0The hydrilla in beaker A was in pond water while the hydrilla in beaker C was in tap water.The pond water (compared to the tap water)is much more suitable for the hydrilla.00
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4/17/2016 14:20:51Alison Chew6The presence of sunlight0Sunlight prevents organism from decayingThere were no sunlight present in beaker A and D so the plants decayed.0Plants grow better in pond water than in tap water.Plant in beaker A that was in pond water grew healtier than plant in beaker C which contained tap water00
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4/18/2016 16:02:56Ivan7It was kept in the dark.
The plant cannot make food without light.
The plants in B and C died before week 8 as they could not make food to survive in the dark.
The hydrilla grows better in pond than tap water.
The hydrilla in A is in pond water and grew taller and faster while the hydrilla in tap water grew slower and shorter.
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4/18/2016 20:52:26Uwais36
They do not have enough light.
Plants need light.Plants die without light.
Pond water has more nutrients and mineral salts.
Beaker A took in pond water but Beaker C took in tap water.
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4/24/2016 22:57:13Sylvia So Ying Tong34Lack of sunlight
It was not able to make its own food.
There was no light for the chlorophyll in the leaves of the plant to trap so the plant cannot photosynthesise, causing it to die due to lack of food.
Pond water has more mineral salts than tap water.
The roots of Plants A and C will absorb the pond water and tap water respectively and Plant A will receive more mineral salts from the pond water taken in by its roots and hence, it will grow healthier.
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