Question

all important question from the biology of class 9​

Answer 1

(d)Define:(i)Pollination(ii)Apocarpous gynoecium(iii)Incubation period(iv)Antibiotics(v)Peristalsis[5](e)State whether the following are True or False. Correct and rewrite the statements(i)Cross-pollination requires abiotic or biotic agents.(ii)In mammals, the neck contains eight vertebrae.(iii)Keratin gives colour to the skin.(iv)Fats are non-essential componentsof food.
(v)A group of organisms that lack chlorophyll.[5](b)Select one suitable term from the brackets and fill in the blanks:(i)The female reproductive part of a flower is the __________. [carpel, stamen, corolla](ii)Vallisneriais pollinated by __________. [water, air, animals](iii)__________is a false fruit. [Mango, Apple, Grape](iv)The joint present in the elbow is the __________joint. [ball and socket, hinge, pivot](v)The branch of science that deals with the study of cell and its function is __________. [Botany, Ecology, Cytology][5](c)State one point of difference between the following pairs on the basis of what is indicated inthe brackets.(i)Parasiticand saprophytic nutrition [definition](ii)Centrosome and chromosome [location](iii)Algae and fungi [mode of nutrition](iv)Respiration and photosynthesis [product formed](v)Stomata and lenticels [guard cells][5]