What is true about the given figure?
1.
The plant concerned is Chara, A is Oogonium and B is Antheridium
2.
The plant concerned is Chara, B is Oogonium and A is Antheridium
3.
The plant concerned is Marchantia, A is Oogonium and B is Antheridium
4.
The plant concerned is Marchantia, B is Oogonium and A is Antheridium
2. Asexual reproduction
3. Sexual reproduction
4. Regeneration
Monoecious plant of Chara shows the occurrence of:
| 1. | Stamen and carpel of the same plant |
| 2. | upper antheridium and lower oogonium on the same plant |
| 3. | upper ooganium and lower antheridium on the same plant |
| 4. | antheridiophore and archegoniophore on the same plant |
A technique of micro-propagation is:
2. somatic embryogenesis
3. protoplast fusion
4. embryo rescue
Which of the following pairs is not correctly matched?
| Mode of reproduction | Example | ||
| (a) | Offset | (i) | Water hyacinth |
| (b) | Rhizome | (ii) | Banana |
| (c) | Binary fission | (iii) | Sargassum |
| (d) | Conidia | (iv) | Penicilium |
1. a
2. b
3. c
4. d
Which one of the following is common to multicellular fungi, filamentous algae and protonema of mosses?
(1) Diplontic life cycle
(2) Members of kingdom-Plantae
(3) Mode of nutrition
(4) Multiplication by fragmentation
Organisms prefer sexual mode of reproduction in adverse conditions because:
1. It leads to a rapid proliferation of numbers
2. It requires two individuals that can support the progeny
3. It is less energy consuming than the asexual mode of reproduction
4. It provides protection and increases variations that may help progeny to survive
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