EM 10th Science - Unit

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EM 10th Science - Unit - 13

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Choose the correct answer

1. In leech locomotion is performed by

1 point

Anterior sucker

Parapodia

Setae

Contraction and relaxation of muscles

Clear selection

2. The segments of leech are known as

1 point

Metameres (somites)

Proglottids

Strobila

All the above

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3. Pharyngeal ganglion in leech is a part of

1 point

Excretory system

Nervous system

Reproductive system

Respiratory system

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4. The brain of leech lies above the

1 point

Mouth

Buccal Cavity

Pharynx

Crop

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5. The body of leech has

1 point

23 segments

33 segments

38 segments

30 segments

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6. Mammals are _______________ animals.

1 point

cold blooded

warm blooded

poikilothermic

all the above

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7. The animals, which give birth to young ones, are

1 point

Oviparous

Viviparous

Ovoviviparous

all the above

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Fill in the blanks.

1. The posterior sucker is formed by the fusion of the __________ segments

1 point

2. The existence of two sets of teeth in the life of an animal is called ___________dentition.

1 point

3. The anterior end of leech has a lobe-like structure called ______________.

1 point

4. The blood sucking habit of leech is known as __________

1 point

5. _______________separate nitrogenous waste from the blood in rabbit

1 point

6. __________ spinal nerves are present in rabbit.

1 point

True or False

1. An anticoagulant present in saliva of leech is called heparin.

1 point

True

False

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2. The vas deferens serves to transport the ovum

1 point

True

False

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3. Diastema is a gap between premolar and molar teeth in rabbit.

1 point

True

False

Clear selection

4. The cerebral hemispheres of rabbit are connected by band of nerve tissue called corpora quandrigemina.

1 point

True

False

Clear selection

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