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17 questions · timed · auto-graded

Question 21 Mark
Explain sclerenchyma importance of plants.
Answer
Sclerenchyma gives strength, rigidity, and flexibility to the plant body, thus enabling it to withstand various strains.
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Question 91 Mark
Write one word for the following: An organism whose body is made up of a single cell.
Answer
Unicellular organism
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Question 141 Mark
Name the tissue associated with the following: Rhythmic movement of the heart beat.
Answer
Cardiac muscle tissue
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Question 161 Mark
A permanent tissue is of how many types?
Answer
Permanent tissues are of three types - simple tissues, complex tissues, and special tissues.
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Question 171 Mark
What is a permanent tissue?
Answer
Sclerenchyma is a type of simple tissue present commonly in roots, stems, leaves, and petioles. Its cells are dead, elongated and narrow with thickened and lighnified cell walls. Sclerenchyma is of two types i.e. fibers and sclereids
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[1 Mark Question Answer] - BIOLOGY STD 9 Questions - Vidyadip