1.
Mark the odd one in each of the following groups.
Earthworms, Sponges, Cockroaches, Tapeworms.
2.
There are various types of reproduction. The type of reproduction adopted by an organism depends on
4.
There is no natural death in single celled organisms like Amoeba and bacteria because-
6.
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
9.
Match the asexual reproductive structures in Column I with the organisms in Column II
| Column I | Column II |
| A. Conidia | 1. Chiamydomonas |
| B. Gemmules | 2. Hydra |
| C. Zoospores | 3. Penicillium |
| D. Buds | 4. Sponges |
| | 5. Banana |
11.
In papaya and date palm, both male and female flowers are present on the same plant.
12.
External fertilisation occurs in majority of
13.
Mitotic cell divisions occur during embryo-genesis.
14.
Sugarcane is propagated by
15.
Gametes are always haploid and gametogenesis always involves meiosis.
17.
Vegetative propagation in Pistia occurs by
18.
The terms homothallic and monoecious are used to denote
19.
Appearance of vegetative propagules from the nodes of plants such as sugarcane and ginger is mainly because
20.
The most significant feature of vegetative propagation is that
