Reproduction in Organisms Practice Questions - DPP for NEET

 Page 1


1. Which one of the following is not a method of  vegetative
propagation?
(a) Budding (b) Layering
(c) Sowing (d) Tissue culture
2. A population of genetically identical individuals, obtained
from asexual reproduction is
(a) Callus (b) Clone
(c) Deme (d) Aggregate
3. Natural parthenogenesis occurs in:
(a) Protozoans (b) Earthworm
(c) All insects (d) Honeybee
4. Retention of larval characters even after sexual maturity is
called
(a) Parthenogenesis (b) Ontogenesis
(c) Paedogenesis (d) Neoteny
5. Asexual reproduction is an effective strategy in stable
environments because
(a) gametogenesis is most efficient under these conditions.
(b) the offspring, genetically identical to their parents, are
preadapted to the environment.
(c) asexual parthenogenesis produces a large amount of
genetic diversity .
(d) animal cells tend to be more totipotent under stable
conditions.
6. If you compared the genetic makeup of an animal produced
by parthenogenesis with that of its mother, which of the
following would you expect?
(a) About 100 percent genetic similarity
(b) About 50 percent genetic similarity
(c) No genetic similarity
(d) Parthenogenetic animals have no mother
Page 2


1. Which one of the following is not a method of  vegetative
propagation?
(a) Budding (b) Layering
(c) Sowing (d) Tissue culture
2. A population of genetically identical individuals, obtained
from asexual reproduction is
(a) Callus (b) Clone
(c) Deme (d) Aggregate
3. Natural parthenogenesis occurs in:
(a) Protozoans (b) Earthworm
(c) All insects (d) Honeybee
4. Retention of larval characters even after sexual maturity is
called
(a) Parthenogenesis (b) Ontogenesis
(c) Paedogenesis (d) Neoteny
5. Asexual reproduction is an effective strategy in stable
environments because
(a) gametogenesis is most efficient under these conditions.
(b) the offspring, genetically identical to their parents, are
preadapted to the environment.
(c) asexual parthenogenesis produces a large amount of
genetic diversity .
(d) animal cells tend to be more totipotent under stable
conditions.
6. If you compared the genetic makeup of an animal produced
by parthenogenesis with that of its mother, which of the
following would you expect?
(a) About 100 percent genetic similarity
(b) About 50 percent genetic similarity
(c) No genetic similarity
(d) Parthenogenetic animals have no mother
DPP/ CB23
B-90
7. Which of the following statements about animals that utilize
external fertilization is false?
(a) They are divided equally between terrestrial and aquatic
species.
(b) Many produce large numbers of gametes to ensure
successful reproduction.
(c) The behaviours associated with mating are often highly
synchronized.
(d) The probability of any one egg being fertilized and
developing into an adult can be low.
8. Which of the following statements about animal reproduction
is false ?
(a) Species that reproduce sexually cannot also reproduce
asexually .
(b) V iviparity , but not ovoviviparity , is common in mammals.
(c) Male insects can remove spermatophores deposited in
a female by other males.
(d) Oogenesis and spermatogenesis both occur in
simultaneous hermaphrodites.
9. Which of the following animals qualifies as a sexually
reproducing, oviparous species ?
(a) Human (b) Chicken
(c) Kangaroo (d) Sea star
10. Benefits of asexual reproduction include all of the following
except
(a) it often allows for the production of many more offspring
at the same time
(b) it is advantageous in changing environments in which
population variety is the key to successful propagation
of a species
(c) it is easier in certain environments to have offspring
without searching for a mate
(d) allowing the conservation of resources otherwise
allocated to finding mates and performing ritualized
courtship.
11. All the ‘eyes’ of a potato tuber are taken out and it is sown in
the ground normally . New plants will
(a) Not emerge (b) Emerge normally
(c) Be weaker (d) Be healthier
12. Basal half of an onion bulb is removed and upper half is
sown in the ground. New plant will
(a) Emerge normally (b) Not emerge
(c) Be without leaves (d) Be without flowers
13. A small portion of cane-sugar stem between the two
successive nodes is cut off and sown in the soil normally.
New plants will
(a) Be formed normally (b) Not be formed
(c) Be without juice (d) Without nodes
14. A cutting of rose plant is thoroughly waxed and planted in
the soil normally , It will form
(a) New rose plant
(b) A dead piece of rose stem after some time
(c) A rose plant of improved variety
(d) None of these
15. When an ovary develops into a fruit, without fertilization, it
is called
(a) apospory (b) apogamy
(c) parthenocarpy (d) porogamy
16. Asexual reproduction is the best strategy for plants
(a) that are well adapted to their stable environment.
(b) as winter approaches
(c) when new genes must be introduced
(d) that have underground stems.
17. Bamboo reproduces by
(a) rhizomes (b) tubers
(c) corms (d) stolons
18. Grafting is an example of asexual reproduction. Which of the
following choices is an example of asexual reproduction
involving nonvegetative parts of a plant ?
(a) Apomixis (b) Production of corms
(c) Production of bulbs (d) Production of rhizomes
19. What is necessary for successful grafting to occur ?
(a) Each section must be able to form roots.
(b) The grafted section must be able to form seeds.
(c) Fusion of the two vascular tissues must occur.
(d) Fusion of the two cambial tissues must occur.
20. Banana fruits are seedless, because
(a) auxins are sprayed for rapid development of fruit.
(b) vegetative propagation of plant.
(c) they are triploid plants.
(d) fruits are artificially ripened.
Page 3


1. Which one of the following is not a method of  vegetative
propagation?
(a) Budding (b) Layering
(c) Sowing (d) Tissue culture
2. A population of genetically identical individuals, obtained
from asexual reproduction is
(a) Callus (b) Clone
(c) Deme (d) Aggregate
3. Natural parthenogenesis occurs in:
(a) Protozoans (b) Earthworm
(c) All insects (d) Honeybee
4. Retention of larval characters even after sexual maturity is
called
(a) Parthenogenesis (b) Ontogenesis
(c) Paedogenesis (d) Neoteny
5. Asexual reproduction is an effective strategy in stable
environments because
(a) gametogenesis is most efficient under these conditions.
(b) the offspring, genetically identical to their parents, are
preadapted to the environment.
(c) asexual parthenogenesis produces a large amount of
genetic diversity .
(d) animal cells tend to be more totipotent under stable
conditions.
6. If you compared the genetic makeup of an animal produced
by parthenogenesis with that of its mother, which of the
following would you expect?
(a) About 100 percent genetic similarity
(b) About 50 percent genetic similarity
(c) No genetic similarity
(d) Parthenogenetic animals have no mother
DPP/ CB23
B-90
7. Which of the following statements about animals that utilize
external fertilization is false?
(a) They are divided equally between terrestrial and aquatic
species.
(b) Many produce large numbers of gametes to ensure
successful reproduction.
(c) The behaviours associated with mating are often highly
synchronized.
(d) The probability of any one egg being fertilized and
developing into an adult can be low.
8. Which of the following statements about animal reproduction
is false ?
(a) Species that reproduce sexually cannot also reproduce
asexually .
(b) V iviparity , but not ovoviviparity , is common in mammals.
(c) Male insects can remove spermatophores deposited in
a female by other males.
(d) Oogenesis and spermatogenesis both occur in
simultaneous hermaphrodites.
9. Which of the following animals qualifies as a sexually
reproducing, oviparous species ?
(a) Human (b) Chicken
(c) Kangaroo (d) Sea star
10. Benefits of asexual reproduction include all of the following
except
(a) it often allows for the production of many more offspring
at the same time
(b) it is advantageous in changing environments in which
population variety is the key to successful propagation
of a species
(c) it is easier in certain environments to have offspring
without searching for a mate
(d) allowing the conservation of resources otherwise
allocated to finding mates and performing ritualized
courtship.
11. All the ‘eyes’ of a potato tuber are taken out and it is sown in
the ground normally . New plants will
(a) Not emerge (b) Emerge normally
(c) Be weaker (d) Be healthier
12. Basal half of an onion bulb is removed and upper half is
sown in the ground. New plant will
(a) Emerge normally (b) Not emerge
(c) Be without leaves (d) Be without flowers
13. A small portion of cane-sugar stem between the two
successive nodes is cut off and sown in the soil normally.
New plants will
(a) Be formed normally (b) Not be formed
(c) Be without juice (d) Without nodes
14. A cutting of rose plant is thoroughly waxed and planted in
the soil normally , It will form
(a) New rose plant
(b) A dead piece of rose stem after some time
(c) A rose plant of improved variety
(d) None of these
15. When an ovary develops into a fruit, without fertilization, it
is called
(a) apospory (b) apogamy
(c) parthenocarpy (d) porogamy
16. Asexual reproduction is the best strategy for plants
(a) that are well adapted to their stable environment.
(b) as winter approaches
(c) when new genes must be introduced
(d) that have underground stems.
17. Bamboo reproduces by
(a) rhizomes (b) tubers
(c) corms (d) stolons
18. Grafting is an example of asexual reproduction. Which of the
following choices is an example of asexual reproduction
involving nonvegetative parts of a plant ?
(a) Apomixis (b) Production of corms
(c) Production of bulbs (d) Production of rhizomes
19. What is necessary for successful grafting to occur ?
(a) Each section must be able to form roots.
(b) The grafted section must be able to form seeds.
(c) Fusion of the two vascular tissues must occur.
(d) Fusion of the two cambial tissues must occur.
20. Banana fruits are seedless, because
(a) auxins are sprayed for rapid development of fruit.
(b) vegetative propagation of plant.
(c) they are triploid plants.
(d) fruits are artificially ripened.
DPP/ CB23
B-91
21. Consider the following statements and choose the correct
option.
(i) The genetic constitution of a plant is unaffected in
vegetative propagation.
(ii) Rhizome in ginger serves as an organ of vegetative
reproduction.
(iii) Totipotency of cells enables us to micropropagate
plants.
(a) Statements (i) and (ii) alone are true
(a) Statements (ii) and (iii) alone are true
(c) Statement (ii) alone is true
(d) All the three statements (i), (ii) and (iii) are true
22. Plants identical to mother plants can be obtained from
(a) seeds (b) stem cutting
(c) Both (a) and (b) (d) None of these
23. Ploidy of ovary , anther, egg, pollen, male gamete and zygote
are respectively-
(a) 2n, 2n, n, 2n, n, 2n (b) 2n, 2n, n, n, n, 2n
(c) 2n, n, n, n, n, n (d) 2n, 2n, n, 2n, 2n, 2n
24. Offsprings of oviparous animals are at greater risk as
compared to offsprings of viviparous animals because-
(a) Proper embryonic care and protection is lesser
(b) Embryo is not developed
(c) Progenies are with more variation
(d) Progenies are larger
25. The parameter(s) of senescence or old age is/are-
(a) End of the reproductive phase
(b) Concomitant change in body (like slowing metabolism)
(c) Failure of metabolism decreases
(d) Both (a) and (b)
26. The terms homothallic and monoecious are used to denote
(a) bisexual condition (b) unisexual condition
(c) staminate flowers (d) pistillate flowers
27. During regeneration, modification of an organ to other or-
gan is known as
(a) Morphogenesis (b) Epimorphosis
(c) Morphallaxis (d) Accretionary growth
28. Cells become variable in morphology and function in differ-
ent regions of the embryo. The process is
(a) differentiation (b) metamorphosis
(c) organisation (d) rearrangement
29. Earthworms, sponges, tapeworms are
(a) bisexual animals (b) unisexual animals
(c) hermaphrodites (d) Both (a) and (c)
30. The site of origin of the new plantlets in potato, dahlia,
ginger and banana is-
(a) Floral buds present on stem
(b) Internodes of modified stem
(c) Nodes of modified stem
(d) Adventitious buds present on root
31. Among the following which one is not a method of
vegetative propagation?
(a) Budding (b) Layering
(c) Sowing (d) Tissue culture
32. V egetative propagation in mint occurs by:
(a) offset (b) rhizome
(c) sucker (d) runner
33. What is common between vegetative reproduction and
apomixis?
(a) Both are applicable to only dicot plants
(b) Both bypass the flowering phase
(c) Both occur round the year
(d) Both produces progeny identical to the parent
34. Individuals of a clone-
(a) Are genetically similar but morphologically different
(b) Are morphologically similar but genetically different
(c) Are morphologically and genetically similar
(d) Are genetically and phenotypically different
35. Some organisms are capable of asexual or sexual
reproduction. Under favourable conditions, reproduction
proceeds asexually . When conditions become more stressful
reproduction switchess to a sexual mode. Why?
(a) Sexual reproduction is simple and more rapid allowing
larger numbers of offspring to be produced
(b) Sexual reproduction requires two separate individuals,
who can mutually provide nutrient support during
stress
(c) Sexual reproduction produces individuals with new
combinations of recombined chromosomes increasing
diversity
(d) Asexual reproduction requires more energy