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Reproduction in Organisms: Evaluation - Questions and choose the correct answer | Study Material, Lecturing Notes, Assignment, Reference, Wiki description explanation, brief detail |

Chapter: 12th Zoology : Reproduction in Organisms

Reproduction in Organisms: Evaluation

Zoology : Reproduction in Organisms - Questions and choose the correct answer

Evaluation

 

1. In which type of parthenogenesis are only males produced?

a) Arrhenotoky

b) Thelytoky

c) Amphitoky

d) Both a and b

 

2. Animals giving birth to young ones:

a) Oviparous

b) Oviviviparous

c) Viviparous

d) Both a and b

 

3. The mode of reproduction in bacteria is by

a) Formation of gametes

b) Endospore formation

c) Conjugation

d) Zoospore formation

 

4. In which mode of reproduction variations are seen

a) Asexual

b) Parthenogenesis

c) Sexual

d) Both a and b

 

5. Assertion and reasoning questions:

In each of the following questions there are two statements. One is assertion (A) and other is reasoning (R). Mark the correct answer as

A. If both A and R are true and R is correct explanation for A

B If both A and R are true but R is not the correct explanation for A

C. If A is true but R is false

D. If both A and R are false.

I. Assertion: In bee society, all the members are diploid except drones.

Reason: Drones are produced by parthenogenesis.

A   B    C    D

II. Assertion: Offsprings produced by asexual reproduction are genetically identical to the parent.

Reason: Asexual reproduction involves only mitosis and no meiosis.

A   B    C    D

III. Assertion: Viviparous animals give better protection to their offsprings.

Reason: They lay their eggs in the safe places of the environment.

A    B    C    D

 

6. Name an organism where cell division is itself a mode of reproduction.

 

7. Name the phenomenon where the female gamete directly develops into a new organism with an avian example.

 

8. What is parthenogenesis? Give two examples from animals

 

9. Which type of reproduction is effective -Asexual or sexual and why?

 

10. The unicellular organisms which reproduce by binary fission are considered immortal. Justify.

 

11. Why is the offspring formed by asexual reproduction referred as a clone?

 

12. Why are the offsprings of oviparous animal at a greater risk as compared to offsprings of viviparous organisms?

 

13. Give reasons for the following:

(a) Some organisms like honey bees are called parthenogenetic animals

(b) A male honey bee has 16 chromosomes where as its female has 32 chromosomes.

 

14. Differentiate between the following:

(a) Binary fission in amoeba and multiple fission in Plasmodium

(b) Budding in yeast and budding in Hydra

(c) Regeneration in lizard and Planaria

 

15. How is juvenile phase different from reproductive phase?

 

16. What is the difference between syngamy and fertilization?




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