MCQ PRACTICE SET (With Answer) 01.09.2020

 1. Natural parthenogenesis is found in 

(a) Cockroach

(b) Drosophila melanogaster

(c) Honey bee

(d) All of these

2. The phylogenetic system refers to

(a) The grouping according to floral similarities

(b) The grouping according to evolutionary  trends

(c) The grouping according to all morphological characters

(d) The grouping of plants in order of their increasing complexity

3. In white ants the cellulose is digested by cellulose enzyme which is secreted by

(a) gut

(b)Trichonympha campanula

(c)Intestine

(d) Digestive gland

4. Female gametophyte of angiosperms mostly is

(a) Seven celled

(b) Eight celled

(c) Multi celled

(d) 11 celled

5. The connecting link between annelids and arthropods is

(a) Nereis 

(b) Belostoma 

(c) Peripatus 

(d) Balanus

6. Which one of following is true about chloroplast

(a) It is underground part

(b) It helps in pollination

(c) Self replicating organelle

(d) Involve in Lipid synthesis

7. Dye injected into a plant cell might be able to enter an adjacent cell through a

(a) Tight junction

(b) Microtubule

(c) Desmosome

(d) Plasmodesma

8. Which of the following organelles or structures is found in both plant and animal cells?

(a) Central vacuole

(b) Tonoplast

(c) Cell wall

(d) Peroxisomes

9. The principle of dominance states that

(a) all alleles are dominant.

(b)  all alleles are recessive.

(c) some alleles are dominant and others are recessive.

(d) alleles are neither dominant nor recessive.

10. The principles of probability can be used to

(a) predict the traits of the offspring produced by genetic crosses.

(b) determine the actual outcomes of genetic crosses.

(c) predict the traits of the parents used in genetic crosses.

(d) decide which organisms are best to use in genetic crosses

11. In a study of the fossil record of early mammals, a researcher notice a changing environment is followed by the initial appearance of a tree-climbing species, which is then followed by many

later tree-climbing species. This is an example of

(a) anagenesis.

(b) gradualism.

(c) species selection.

(d) adaptive radiation

12. A mass extinction is

(a) the extinction of small-sized species.

(b) the extinction of large-sized species.

(c) the simultaneous extinction of many species.

(d) something that has never been seen in the fossil record.

13. Cladistics is a method of classification that considers

(a) traits that show homology and homoplasy.

(b) all homologous traits, both primitive and derived.

(c) only primitive homologous traits.

(d) only derived homologous traits.

14. Macroevolution is defined as:

(a) evolution that occurs over geologic time.

(b) process by which new species emerge from existing species.

(c) the origin of new species by mutation and natural selection.

(d) all of the above

15. Population genetics provides answers for all of the following questions except:

(a) what is the frequency of genetic disease in a population?

(b) what fraction of the phenotypic variation in a trait is the result of genetic variation?

(c) what alleles are most likely to mutate?

(d) given certain quantifiable variables, how long is a disease likely to persist?

16. Which of the following is not one of the assumptions of the Hardy-Weinberg law ?

(a) The population is very large.

(b) There is non-random mating within the population.

(c) Mutations in the alleles do not occur.

(d) The ability of all genotypes for survival and reproduction is the same.

17. Hardy-Weinberg equilibrium in populations is defined as conditions which produce:

(a) only heterozygotes.

(b) many lethal alleles.

(c) genetic drift.

(d) constant allele frequencies which do not change from generation to generation.

18. Twins made from two individual zygotes (dizygotic twins):

(a) are related genetically as the monozygotic twins.

(b) share 0% genetic similarities.

(c) are similar in 100% of genetic sequences.

(d) are related genetically as non-twin siblings.

19. A drug which prevents uric acid synthesis by inhibiting the enzyme xanthine oxidase is

(a) Aspirin 

(b) Allopurinol

(c) Colchicine 

(d) Probenecid

20. Which of the following is required for crystallization and storage of the hormone insulin?

(a) Mn++ 

(b) Mg++

(c) Ca++ 

(d) Zn++

21. Oxidation of which substance in the body yields the most calories

(a) Glucose 

(b) Glycogen

(c) Protein 

(d) Lipids

22. Milk is deficient in which vitamins?

(a) Vitamin C 

(b) Vitamin A

(c) Vitamin B2 

(d) Vitamin K

23. Milk is deficient of which mineral?

(a) Phosphorus 

(b) Sodium

(c) Iron 

(d) Potassium

24. Synthesis of prostaglandinsis is inhibited by

(a) Aspirin 

(b) Arsenic

(c) Fluoride 

(d) Cyanide

25. HDL is synthesized and secreted from

(a) Pancreas 

(b) Liver

(c) Kidney 

(d) Muscle

Answer:

1. (c)    2.(b)       3.(b)         4. (a)       5(c)     6 (c)      7 (d)      8 (d)            9(c)      10(a)

11 (d)   12 (d)      13. (d)      14. (d)     15(c)     16 (c)    17 (d)    18 (d)     19. (a)    20. (a)

21(a)      22(a)      23(b)        24(a)      25(a)