Chhattisgarh State Board Class 7 Science Chapter 6 Structural organisation in Living Organisms Exercise Choose the correct answer, Fill in the blanks, true and false here.
Choose the following correct answer –
(a) The lowest level of organisation in the living world –
(a) Organ
(b) Tissue
(c) Cell
(d) Body
Answer:- (c) Cell.
(b) Stem is made up of –
(a) Epithelial tissue
(b) Vascular tissue
(c) Ground tissue
(d) All of these
Answer:- (d) All of these.
(c) Skin of our body is made up of –
(a) Epithelial tissue
(b) Skeleton
(c) Blood
(d) Nervous tissue
Answer:- (a) Epithelial tissue.
(d) Cells of some tissue are –
(a) Only structurally same
(b) Only functionally same
(c) Structurally & functionally different
(d) Similar in structure function
Answer:- (d) Similar in structure function.
(e) Highest level of organisation in the living world is –
(a) Species
(b) Biospher
(c) Community
(d) Ecosystem
Answer:- (b) Biospher.
(2) Fill in the blanks –
(a) Different —– together constituent the organ system in multi cellular organisms.
Answer:- Organs.
(b) —— tissue is found at the tip of root & stem.
Answer:- Meristematic.
(c) Cells -> —— -> organ -> —– -> body.
Answer:- Tissue, organs system.
(d) —– & —- together constitute the biotic community.
Answer:- Plants, animals.
(e) Organism -> —— -> community -> —– -> Biosphere.
Answer:- Species -> population, ecosystem.
(f) Amoeba, paramecium are —- organism.
Answer:- Unicellular.
(g) The —— tissue of the plant root absorbs water.
Answer:- Epithelial.
(h) Bones & blood are —- tissue.
Answer:- Connective.
(i) Cells of muscular tissue may be —– & —–.
Answer:- Contract, relax.
(3) Identity the true & false statements among the following correct the false statements & rewrite them.
(i) The length of root & stem increases due to vascular tissues.
False – The length of root & stem increases due to Meristematic tissues.
(ii) Xylem transports the food manufactured in the leaf to the other part of plant.
False – Xylem transport the water & salts manufactured in the leaf to other part of plant.
(iii) Different organs of excretory system are made up of nerve cells – True.
(iv) Every organism depends upon living organism in its environment –
Every organism depends upon living & non living organisms in its environment.
(v) Different biosphere of the earth together constitute the ecosystem.
– True.
The lowest level of organization in the living
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