NEET Biology Multiple Choice Questions (MCQs) and Answers-edubio.in

1.The fruit developed from the signal ovary is said to be

(a) composite type  (b) simple type

(c) aggregate type  (d) None of these

2.Double fertilisation results in the production  of
(a) haploid nucleus  (b) diploid nucleus

(c) triploid nucleus  (d) tetraploid nucleus

3.The fleshy fruits with hard and stony endocarp are called

(a) drupe  (b) berry

(c) pepo  (d) pome 

4.The process of transfer of pollen grains from  another to stigmatic surface of the flower with the help of water is called 

(a) anemophily  (b) zoophily

 (c) hydrophily  (d) ornithophily  

5.The capitulum type  of inflorescence is found in

(a)marigold  (b) salvia

(c)euphorbia  (d) jasmine 

6.The period of suspended growth due to exogenous conditions is termed as

(a)quiescence  (b) dormancy

(c) perennation (d) hibernation 

7.Which of following is a  free living nitrogen fixing bacteria present in the soil 

(a) Pseudomonas (b) Rhizobium

(c) Azotobacter (d) Nitrosomonas 

8.Which of the following plants is used as biofertiliser

(a) Nostoc (b) Funaria

(c) Volvox (d) Rhizopus 

9.Sudden and heritable change in a character of an organism is called

(a) mutation  (b) heterosis

(c) inbreeding  (d) selection 

10.Mating between two individuals differing in genotye to produce genetic variation is called

(a) domestication  (b) introduction

(c) hybridisation  (d) mutation 

11.A hereditary disease which is never passed on from father to son is

(a) autosomal linked disease  (b) X-chromosomal  linked disease

(c) Y-chromosomal linked disease  (d) None of these

12.A diploid living organism develops from zygote by repeated cell divisions is called

(a)  meiosis (b) amitosis

(c) mitosis (d) segmentation

13.The flower in which the gynoecium occupies the highest position on the thalamas leaving other parts below is called

(a)Hypogynous  (b) perigynous

(c) epigynous  (d) None of these

14.The arrangement of the ovules on the placentae developed from the central axis of the ovary called

(a) parietal placentation  (b) axile placentation

(c) basal placentation  (d) marginal placentation

15.The conversion of ammonia intro nitrites and nitrates is called

(a) ammonification  (b) nitrification

(c) denitrification  (d) All of these

16.In RNA , the thymine is replaced by

(a) guanine  (b) adenine

(c) uracil  (d) cytosine

Answers

1. (b) simple type  

2. (c) triploid nucleus

3. (a) drupe

4. (c) hydrophily  

5. (a)marigold  

6. (b) dormancy

7. (c) Azotobacter

8. (a) Nostoc

9. (a) mutation

10. (c) hybridisation

11. (b) X-chromosomal  linked disease

12. (c) mitosis

13. (a)Hypogynous 

14. (b) axile placentation

15. (b) nitrification

16. (c) uracil