Consider the following statements and choose the correct option.

1. The genetic constitution of a plant is unaffected invegetative propagation.
2. Rhizome in ginger serves as an organ of vegetative reproduction.
3. Totipotency of cells enablesus to micropropagate plants.

Statements (1)and (2) are true
Statements (2) and (3) are true
Statement (2) alone is true
All the three statements are true

Match the column I with column II.

Column I	Column II
A. The pollen transferred from one flower to another	1. Germination
B. The process in which embryo develops into seedling	2. Pollination
C. Fertilised egg in humans gets implanted in	3. Menstruation
D. When egg in humans is not fertilised process occur	4. Uterus

A → (2); B → (1); C → (4); D → (3)
A → (1); B → (2); C → (4); D → (3)
A → (1); B → (2); C → (3); D → (4)
A → (1); B → (3); C → (2); D → (4)

Match the column I with column II.

Column I	Column II
A. Animals which give birth to young one	1. Hydra
B. Animal which produces bud	2. Planaria
C. An animal which shows regeneration	3. Viviparous
D. Provides nutrition to the developing embryo from the mother	4. Placenta

A → (1); B → (3); C → (2); D → (4)
A → (3); B → (1); C → (2); D → (4)
A → (3); B → (2); C → (4); D → (1)
A → (3); B → (4); C → (1); D → (2)

Identify gametes (A, B and C) respectively.

Heterogametes, isogametes, Homogametes
Isogametes, homogametes, heterogametes
Homogametes, isogametes, heterogametes
Homo/Isogametes, heterogametes, heterogametes

Identify the events (A, B,D and E) in life of general reproduction-

A-Gamete transfer, B-Gametogeneis, D-Zygote formation, E-Embryogenesis
A-Gametogeneis, B-Gamete transfer, D-Zygote formation, E-Embryogenesis
A-Gametogeneis, B-Zygote formation, D-Gamete transfer, E-Embryogenesis
A-Gametogeneis, B-Gamete transfer, D-Embryogenesis, E-Zygote formation

Examine the figures given below and select the right options out of (a- d); in which all the 4 items A, B, C and D are identified correctly-

Tuber Rhizome Bulb Leaf buds
Offset Sucker Stolon Leaf buds
Offset Stolon Sucker Leaf buds
Tuber Rhizome Bulbil Leaf buds

Syngamy can occur outside the body of the organism in

Fungi
Mosses
Algae
Ferns

Solution

In most aquatic organisms, such as a majority of algae and fishes as well as amphibians, syngamy occurs in the external medium (water), i.e., outside the body of the organism. This type of gametic fusion is called external fertilisation.

Meiosis takes place in :

Conidia
Gemmule
Megaspore
Meiocyte

Solution

Meiosis takes place in meiocyte while Conidia and Gemmule are asexual structures and megaspore is haploid.

Monoecious plant of Chara shows occurrence of :

stamen and carpel of the same plant
upper antheridium and lower oogonium on the same plant
upper oogonium and lower antheridium on the same plant
antheridiophore and archegoniophore on the same plant

Solution

Male sex organ is called antheridium or globule while female sex organ is called oogonium. They develop on the same branchlet in the same plant in chara.

Select the wrong statement:

Anisogametes differ either in structure, function or behaviour.
In Oomycetes female gamete is smaller and motile, while male gamete is larger and non-motile.
Chalmydomonas exhibits both isogamy and anisogamy and Fucus shows oogamy.
Isogametes are similar in structure, function and behaviour.

Solution

In oomycetes female gamete is large and non motile while male gamete is small & motile.

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