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Cell—Structure and Functions

A suitable term for the various components of cells is
(a) tissue (c) chromosomes
(b) cell organelles (d) genes

Cell—Structure and Functions

Which one of the following term is not a part of the nucleus?

(a) ribosome (c) chromosome (b) nucleolus (d) gene

Cell—Structure and Functions

Read the different combinations of terms given below:
(a) cell wall, cell membrane, nucleus, plastid
(b) cell wall, nucleus, ribosome, chromosome
(c) cell membrane, mitochondria, ribosome, chromosome
(d) cell membrane, ribosome, mitochondria, chloroplast.
The correct combination of terms with reference to an animal cell is _____.

Cell—Structure and Functions

Majority of cells cannot be seen directly with our naked eyes because:
(a) organisms are generally unicellular
(b) cells are microscopic
(c) cells are present only inside the body
(d) cells are grouped into tissues

Cell—Structure and Functions

Choose the correct statement with respect to unicellular organisms:
(a) in unicellular organisms, tissues work in co-ordination to perform different functions.
(b) unicellular organisms do not require food.
(c) unicellular organisms respire and reproduce.
(d) all unicellular organisms move by cilia

Conservation of Plants and Animals

Why should we save paper?

Conservation of Plants and Animals

How does deforestation lead to frequent floods and droughts?

Conservation of Plants and Animals

Is deforestation associated with global warming? Explain

Conservation of Plants and Animals

What is biodiversity?

Conservation of Plants and Animals

Mention the aim of Forest (Conservation) Act