Reproduction in Organisms NEET

Q1. Which of the following organisms are correctly paired with its life span?

1. Crow - 15 years

2. Butterfly - 3 weeks

3. Parrot - 40 years

4. Crocodile - 100-150 years

1. Crow - 15 years

Q2. All the following are disadvantages of asexual reproduction, except

1. Adaptability to environmental changes is poor

2. There is no genetic recombination and do not generate variations

3. They cause overcrowding and exhaust the resources and nutrients

4. Young ones are genetically identical with parents and retain desirable traits

4. Young ones are genetically identical with parents and retain desirable traits

Q3. Water hyacinth or "Terror of Bengal"
a) Was introduced in India because of its beautiful foliage and flowers.
b) Is the most invasive weed found growing wherever there is stagnant water.
c) Can propagate sexually by offset at a phenomenal rate

Select the correct set of statements:

1. Only (a)

2. Only (a) and (c)

3. Only (a) and (b)

4. All (a), (b) and (c)

3. Only (a) and (b)

Q4. Animals giving birth to young ones are;

1. Oviparous

2. Ovoviviparous

3. Viviparous

4. Both Oviparous and Viviparous

3. Viviparous

Q5. Which of the following is the first cell of the new generation in all sexually reproducing organisms?

1. Embryo

2. Zygote

3. Gamete

4. Spore

2. Zygote

Q6. Syngamy means:

1. Fusion of similar spores

2. Fusion of dissimilar spores

3. Fusion of cytoplasm

4. Fusion of gametes

4. Fusion of gametes

Q7. Find out the correct order of vegetative propagules of plants:
potato, ginger, Agave, Bryophyllum and water hyacinth.

1. Offset, bulbil, leaf bud, rhizome and eyes

2. Leaf bud, bulbil, offset, rhizome and eyes

3. Eyes, rhizome, bulbil, leaf bud and offset

4. Rhizome, bulbil, leaf bud, eyes and offset

3. Eyes, rhizome, bulbil, leaf bud and offset

Q8. In maize, a meiocyte has 20 chromosomes. What will be the number of chromosomes in somatic cells?

1) 40

2) 30

3) 20

4) 10

3) 20

Q9. Which of the following is incorrect with respect to zygote?

1. First cell of the sporophytes generation

2. Vital link between two successive generations

3. Always diploid

4. Always divide by meiotic division

4. Always divide by meiotic division

Q10. In flowering plants

1. Both male and female gametes are motile

2. Male gametes are motile and female gametes are non-motile

3. Both male and female gametes are non-motile

4. Male gametes are non-motile while female gametes are motile

3. Both male and female gametes are non-motile

Q11. Reproduction is a biological process in which an organism gives rise to young ones similar to itself.
Which of the following statement is false regarding this process?

1. It maintains the continuity of species

2. It maintains the population of organism

3. It does not induce variation

4. Life exists on earth due to reproduction

3. It does not induce variation

Q12. All of the following statements are correct, except

1. No mixing of genetic material or new variations are generated by asexual methods of reproduction

2. Life expectancy is based on average life span

3. Most hermaphrodites do not reproduce by self-fertilization

4. Asexual reproduction is seen in Periplaneta

4. Asexual reproduction is seen in Periplaneta