2.
Mitotic cell divisions occur during embryo-genesis.
4.
Vegetative propagation in Pistia occurs by
5.
The most significant feature of vegetative propagation is that
6.
Gametes are always haploid and gametogenesis always involves meiosis.
7.
In animals, juvenile phase is followed by-
8.
There is no natural death in single celled organisms like Amoeba and bacteria because-
9.
Identify the correct sequence of events.
10.
Bony fishes, bryophytes and pteridophytes show internal fertilisation.
11.
External fertilisation occurs in majority of
13.
Match the terms in Column I with the organisms in Column II.
| Column I | Column II |
| A. Fragmentation | 1. Pistia |
| B. Binary fission | 2. Spirogyra |
| C. Bulbils | 3. Saccharomyces |
| D. Budding | 4. Paramoecium |
| | 5. Agave |
14.
Appearance of vegetative propagules from the nodes of plants such as sugarcane and ginger is mainly because
15.
A multicellular, filamentous alga exhibits a type of sexual life cycle in which the meiotic division occurs after the formation of zygote. The adult filament of this alga has
18.
Plants produced through vegetative propagation are called clones.
19.
The terms homothallic and monoecious are used to denote
