Biology ICSE Class 6 Important Questions Chapter 3 Classification of Plants
Extra Questions
Question 1.
Differentiate between Algae and Fungi.
Answer:
Algae :
a. They are green due to the presence of chlorophyll.
b. They are autotrophic in nature.
c. They are usually found in stagnant water of puddles, streams, pond etc.
d. e.g. Spirogyra, Volvox.
Fungi :
a. They do not have chlorophyll.
b. They are parasitic or saprophytic in nature.
c. They are usually found on dead and decaying matter.
d. e.g. Agaricus, Penicillium.
Question 2.
Name different shapes of bacteria.
Answer:
Cocci (spherical)
Bacilli (rod-like)
Spirilla (spiral-shaped)
Question 3.
What are rhizoids ?
Answer:
Rhizoids are thread like structures present in Bryophytes (mosses) in place of roots.
Question 4.
Classify plants on the basis of nutrition.
Answer:
On the basis of nutrition, plants can be classified into :
(a) Autotrophs : All green plants which make their own food from carbon-dioxide and water using sunlight and chlorophyll are called autotrophs.
(b) Heterotrophs : Non-green plants which lack chlorophyll and cannot make their own food are called heterotrophic plants. They can be parasitic (derive their food from other living organisms) or saprophytic (feeding on dead and decaying organisms), e.g. Cuscuta is a parasite, mushroom is a saprophytic plant.
ICSE Class 6 Biology Important Questions