Extra Question:
Que:Why is the process of reproduction necessary?
Ans: The process of reproduction is necessary for the perpetuation and preservation of species and to increasethe number of members of species.
Que: If the filament of spirogyra is broken into fragments. What will you oberve?
Ans: If the filament of spirogyra are broken into fragments, then each will develop into a new plant.
Que: A flower consists of different parts. Name these parts of a flower.
Ans: The four main parts of a flower are:
(i) speals
(ii) petals
(iii) stamen
(iv) pistil
Que: Name two plants where vegetative reporduction takes place by roots.
Ans: Sweet potato and dahila develops new plants through their roots by the process of vegatative reproduction.
Que: A yellow powdery substance is present in the anther which participates in reproduction process. Name this substance.
Ans: Pollen grains.
Que: In which part of flower does fertillsation occur?
Ans: Ovary is the part where male and female gametes fuse together.
Que: Bryophyllum leaves reproduce using which made of reproduction.
Ans: Asexually by vegetative propagation.
Que: What are the bulb - like projections in yeasts?
Ans: The bulb - like projective formed during reproduction are called buds.
Que: Write the male and female reproductive parts on the flowers.
Ans: The male reproductive part is stamen and the female reproductive part is pistil.
Que: Name two plants in which pollination occurs by water.
Ans: Vallisneria and Hydrilla.
Que: Banana is a fruit without seeds give reason.
Ans: Banana forms from one parent only. There is no seed production.