What is true in the given figure?
1. The plant concerned is Chara and A is Oogonium and B is Antheridium
2. The plant concerned is Chara and B is Oogonium and A is Antheridium
3. The plant concerned is Marchantia and A is Oogonium and b is Antheridium
4. The plant concerned is Marchantia and B is Oogonium
Product of sexual reproduction generally generates
(1) longer viability of seeds
(2) prolonged dormancy
(3) new genetic combination leading to variation
(4) large biomass
Monoecious plant of Chara shows occurrence of
(1) antheridiophore and archegoniophore on the same plant
(2) stamen and carpel on the same plant
(3) upper antheirdium and lower oogonium on the same plant
(4) upper oogonium and lower antheridium on the same plant
Life span of parrot is
(1) 140 years
(2) 60 years
(3) 80 years
(4) 40 years
No individual is immortal except:
(1) Single celled organisms
(2) Green plants
(3) Sponges
(4) Drones
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
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 not vegetative propagule?
(1) Rhizome and sucker
(2) Tuber and offset
(3) Bulbil (e.g. in Agave), leaf buds, bulb
(4) Antherozoid
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
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