2.
Mark the odd one in each of the following groups.
Earthworms, Sponges, Cockroaches, Tapeworms.
3.
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
4.
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 |
6.
Sugarcane is propagated by
8.
In papaya and date palm, both male and female flowers are present on the same plant.
9.
Gametes are always haploid and gametogenesis always involves meiosis.
11.
There are various types of reproduction. The type of reproduction adopted by an organism depends on
12.
Offspring formed by sexual reproduction exhibit more variation than those formed by Asexual reproduction because-
13.
Appearance of vegetative propagules from the nodes of plants such as sugarcane and ginger is mainly because
14.
The most significant feature of vegetative propagation is that
16.
External fertilisation occurs in majority of
17.
The terms homothallic and monoecious are used to denote
19.
Identify the correct sequence of events.
20.
Bony fishes, bryophytes and pteridophytes show internal fertilisation.
