1. Which of these statements is false about the diagram?
a) It represents the asexual reproductive structure of hydra.
b) It contains archaeocyte cells.
c) It represents asexual reproductive structure of sponges.
d) It shows gemmules in sponges
Explanation: "It represents the asexual reproductive structure of hydra". This is False.
2. Humans’ are
a) Seasonal breeder
b) Continuous breeder
c) Both (a) and (b)
d) None of these
Explanation: Continuous breeder
3. Which of the following can be considered as one of the parameter of senescence or old age?
a) End of juvenile or vegetative phase
b) End of reproductive phase
c) Hormonal imbalance
d) Slowing of metabolism due to disease
Explanation: End of reproductive phase
4. Pre-fertilization events among these are
a) Syngamy
b) Gametogenesis and gamete transfer
c) Formation of zygote
d) Embryogenesis
Explanation: Gametogenesis and gamete transfer
5. Gametes are generally
a) Haploid
b) Triploid
c) Diploid
d) Hexaploid
Explanation: Haploid
6. The diagram shows
a) Homogametes of cladophora
b) Heterogametes of fucus
c) Hetrogametes of cladophora
d) Heterogametes of fungus
Explanation: Heterogametes of fucus
7. Which of the following is/are male gametes?
a) Egg
b) Ovum
c) Antherozoids
d) Zygote
Explanation: Antherozoids
8. Count the total number of organisms which are monoecious.
Cucurbits, Coconut, Papaya, Date palm, Chara, Marchantia
a) 1
b) 2
c) 3
d) 4
Explanation: 3
9.Archegoniophore is present in
a) Chara
b) Papaya
c) Marchantia
d) Fucus
Explanation: Marchantia
10.Select the incorrect statement.
a) Unisexual male flower is staminate.
b) Unisexual female flower is pistillate.
c) Heterothallic and dioecious are terms used to describe unisexual condition.
d) Cockroach is a hermaphrodite.
Explanation: "Cockroach is a hermaphrodite". This is incorrect statement.