NEET MEDICAL ENTRANCE- BIOLOGY

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NEET MEDICAL ENTRANCE- BIOLOGY

RANDOM 20 Series - 10

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1. Consider the following statements concerning food chains:

A) A removal of 80% tigers from an area resulted in greatly increased growth of vegetation.

B) Removal of most of the carnivorous resulted in an increase the population of deers.

C) The length of food chains is generally limited to 3 to 4 trophic levels due to energy loss.

D) The length of food chains varies from 2 to 8 trophic levels.

Of these, select the two correct statements.

4 points

A, D

A, B

B, C

C, D

Clear selection

2. The bacteria which attack dead animals are

4 points

a. First link of the food chain and are known as primary producers

b. Second link of the food chain and herbivores

c. Third link of the food chain and are tertiary consumers

d. The end of food chain and are decomposers

Clear selection

3. Which one of the following statements is/are correct?

4 points

a. FSH and LH occur in both males and females.

b. FSH stimulates the follicle to secrete estrogen.

c. The ovarian cycle depends on the blood levels of FSH and LH.

d. All of these are correct.

Clear selection

4. During menstrual cycle, the uterine cyclical changes take place in

4 points

a. Perimetrium

b. Endometrium

c. Corpus luteum

d. Myometrium

Clear selection

5. Who proved that blends of polyblend (plastic waste) and bitumen, when used to lay roads, enhance the bitumen’s water repellant properties and helped to increase Road life?

4 points

a. Ahmed Khan

b. Ramdeo Mishra

c. W.H Pearsall

d. Ramesh Chandra

Clear selection

6. The wings of a bird and the wings of an insect are

4 points

a. Phylogenetic structures and represent divergent evolution

b. Structures and represent convergent evolution

c. Homologous structures and represent the divergent evolution

d. Analogous structures and represent to convergent evolution

Clear selection

7. Which of the following sets includes the bacterial diseases?

4 points

a. Cholera, typhoid, mumps

b. Tetanus, tuberculosis, measles

c. Malaria, mumps, poliomyelitis

d. Diphtheria, leprosy, Plague

Clear selection

8. Consider the following statements:

A. Plant cells have centrioles which are absent in almost all animal cells.

B. Ribosomes are the site of protein synthesis.

C. The middle lamella is a layer mainly of calcium carbonate which holds the different neighbouring cells together.

D. In animal cell, steroidal hormones are synthesized by smooth endoplasmic reticulum.

4 points

a. A and B only are correct

b. C and D only are correct

c. B and D only are correct

d. A and D only or correct

Clear selection

9. The plant having monadelphus stamens and axile placentation is

4 points

a. China rose

b. Pea

c. Tomato

d. Cucumber

Clear selection

10. Male cockroach differs from female cockroach in having

4 points

a. Antennae and anal styles

b. Anal style and anal cerci

c. Anal style and narrow abdomen

d. Anal cerci and broad abdomen

Clear selection

11. Pairing or synapsis between homologous chromosomes occur during

4 points

a. Leptotene

b. Zygotene

c. Pachytene

d. Diplotene

Clear selection

12. Spicules are found in

4 points

a. Hydra

b. Planaria

c. Sycon

d. Obelia

Clear selection

13. Inflorescence is racemose in

4 points

a. Brinjal

b. Tulip

c. Aloe

d. Soybean

Clear selection

14. Ground tissue includes

4 points

a. All tissues external to endodermis

b. All tissues except epidermis and vascular bundles

c. Epidermis and cortex

d. All tissues internal to endodermis

Clear selection

15. Select the correct route for the passage of sperms in male frogs.

4 points

a. Testes → Vasa efferentia → Kidney → Seminal vesicle → Urinogenital duct → Cloaca

b. Testes → Vasa efferentia → Bidder’s canal → Ureter → Cloaca

c. Testes → Vasa efferentia → Kidney → Bidder’s canal → Urinogenital duct → Cloaca

d. Testes → Bidder’s canal → Kidney → Vasa efferentia → Urinogenital duct → Cloaca

Clear selection

16. The Golgi complex plays a major role

4 points

a. As energy transferring organelles

b. In post-translational modification of proteins and glycosylation of lipids

c. In trapping the light and transforming it into chemical energy

d. In digesting proteins and carbohydrates

Clear selection

17. Which structural level enables the proteins to function as enzymes?

4 points

a. Primary

b. Secondary

c. Tertiary

d. Quaternary

Clear selection

18. The synaptonemal complex is formed during which stage?

4 points

a. Pachytene

b. Diplotene

c. Diakinesis

d. Zygotene

Clear selection

19. Most accepted theory for ascent of sap is

4 points

a. Transpiration pull theory

b. Pulsation theory

c. Capillary theory

d. Root pressure theory

Clear selection

20. An example of free living nitrogen fixing aerobic bacteria is

4 points

a. Azotobacter

b. Clostridium

c. Rhizobium

d. Frankia

Clear selection

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