Select the-correct sequence from the following:
(1) Gametogenesis → Syngamy → Zygote → Embryogenesis
(2) Gametogenesis → Syngamy → Embryogenesis → Zygote
(3) Zygote → Embryogenesis → Gametogenesis
(4) Syngamy → Gametogenesis → Zygote → Embryogenesis
Many mammals, especially in natural, wild conditions are:
(1) Continuous breeders
(2) Seasonal breeders
(3) Both continuous and seasonal breeders
(4) Very much disease sensitive
A | B | C |
Identify gametes (A, B and C) respectively:
(1) Heterogametes, isogametes, Homogametes
(2) Isogametes, homogametes, heterogametes
(3) Homogametes, isogametes, heterogametes
(4) Homo / Isogametes, heterogametes, heterogametes
Reptiles and birds are:
(1) Oviparous
(2) Viviparous
(3) Ovoviviparous
(4) Viviparous and oviparous respectively
In biological world each organism has evolved its own mechanism of reproduction, which depends upon?
1. Habitat
2. Internal physiology
3. Size of organism
4. Both 1 and 2
Which of the following is false about internal fertilization?
I. Male gamete is motile
II. Male gametes are non-motile
III. Male gametes are produced in large number
IV. Male gametes are produced in small number
V. There is a significant reduction in the number of eggs produce
VI. In seeded plants non-motile male gametes are carried to female gamete by pollen tubes
(1) I, III, V, VI
(2) III, IV
(3) II, IV
(4) V, VI
Which of the following is not vegetative propagule?
(1) Rhizome and sucker
(2) Tuber and offset
(3) Bulbil (e.g. in Agave), leaf buds, bulb
(4) Antherozoid
Individuals of a clone:
(1) Are genetically similar but morphologically different
(2) Are morphologically similar but genetically different
(3) Are morphologically and genetically similar
(4) Are genetically and phenotypically different
Which of the following is a false statement?
(1) All organisms have evolved similar mechanism to multiply and produce offsprings
(2) Asexual reproduction is uniparental
(3) Sexual reproduction is biparental
(4) In asexual reproduction no fertilization occurs
No individual is immortal except:
(1) Single celled organisms
(2) Green plants
(3) Sponges
(4) Drones