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 |
5.
Sugarcane is propagated by
7.
In papaya and date palm, both male and female flowers are present on the same plant.
8.
There is no natural death in single celled organisms like Amoeba and bacteria because-
9.
Offspring formed by sexual reproduction exhibit more variation than those formed by Asexual reproduction because-
11.
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
13.
Mitotic cell divisions occur during embryo-genesis.
14.
There are various types of reproduction. The type of reproduction adopted by an organism depends on
15.
Vegetative propagation in Pistia occurs by
17.
Identify the correct sequence of events.
18.
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 |
19.
Mark the odd one in each of the following groups.
Earthworms, Sponges, Cockroaches, Tapeworms.
20.
In animals, juvenile phase is followed by-
