1. Find the incorrect statement.
a) Large number of gametes are released in surrounding water in external fertilization.
b) Offspring produced by external fertilization are extremely vulnerable to predators.
c) External fertilization is shown by bony fishes and frogs.
d) In seed plant, the motile male gametes are carried to female gamete by pollen tubes.
Explanation: "In seed plant, the motile male gametes are carried to female gamete by pollen tubes". This is incorrect statement.
2. Internal fertilization is seen in
a) Reptiles
b) Birds
c) Mammals
d) All of these
Explanation: All of these
3. Internal fertilization is seen in
a) Bryophytes
b) Pteridophytes
c) Gymnosperm and angiosperm
d) All of these
Explanation: All of these
4. Which of these characteristics belong to organisms showing internal fertilization?
a) Eggs are formed inside the female body where they fuse with male gamete.
b) Male gametes are motile.
c) Number of eggs produced is less in number
d) All of the above
Explanation: All of the above
5. Development of embryo from zygote is
a) Parthenogenesis
b) Embryogenesis
c) Blastulation
d) Gastrulation
Explanation: Embryogenesis
6. Life in all organism starts from
a) Single cell zygote
b) Two celled zygote
c) Single cell embryo
d) Multicellular embryo
Explanation: Single cell zygote
7.Select the total number of true statements.
(A) In organisms belonging to fungi and algae, the zygote develops a thick wall that is resistant
to dessication and damage.
(B) Formation of diploid zygote is universal in all sexually reproducing organisms.
(C) Syngamy occurs inside the body of the organism in internal fertilization.
(D) In organism with haplontic life cycle, the zygote divides by meiosis to form haploid
spores that grow into haploid individuals.
a) 1
b) 2
c) 3
d) 4
Explanation: 4 true statements
8. The following are oviparous except
a) Crocodile
b) Crow
c) Parrot
d) Horse
Explanation: Horse
9. In oviparous animals like birds and reptiles the fertilized egg is covered by shell made up of
________.
a) \[SiO_{2}\]
b) \[Na_{2}CO_{3}\]
c) \[CaCO_{3}\]
d) \[MgCO_{3}\]
Explanation: \[CaCO_{3}\]
10. The chances of survival of the young one is greater in
a) Internal fertilization
b) External fertilization
c) Oviparous animals
d) Viviparous animals
Explanation: Viviparous animals