Tissues — Science STD 9 — Question

Describe various methods of rain (=water) harvesting.

Find out the correct sentence.

1. Hybridization means crossing between genetically dissimilar plants.
2. Cross between two varieties is called as inter-specific hybridization.
3. Introducing genes of desired characters into a plant gives genetically modified crop.
4. Cross between plants of two species is called as inter varietal hybridization.

1. (i) and (ii)
2. (ii) and (iv)
3. (ii) and(iii)
4. (iii) and (iv)

The compound plants composed of algae and fungi are called:

1. Algae.
2. Bryophytes.
3. Pteridophytes.
4. Lichens.

The science of naming organism is called:

1. Identification.
2. Nomenclature.
3. Classification.
4. Taxonomy.