CELL , TISSUES

Cell is the structural and functional unit of life. The word cell is derived from the Latin word ‘cellula’ which means “a little room”. Can you name the scientist who coined the term cell?

• Robert Hooke

• Anton Von Leeuwenhoek

• Robert Brown

• Ernst Haeckel

The process of plasmolysis in plant cell is defined as:

• Breakdown of plasma membrane in hypotonic solution.

• Shrinkage of cytoplasm in hypertonic medium.

• Shrinkage of Nucleoplasm.

• None of these.

The proteins and lipids, essential for building the cell membrane, are manufactured by:

• Endoplasmic reticulum

• Golgi apparatus

• Mitochondria

• Ribosomes

Plastid that is colourless is-

• Chromoplast

• Leucoplast

• Chloroplast

• Lysosome

A cell that contains a large central vacuole is-

• Plant cell

• Animal cell

• Bacterial cell

• Yeast cell

Which is the main constituent of cell wall?

• Cellulose

• Pectin

• Starch

• Proteins

What do prokaryotic cells lack?

• Cell membrane

• Cytoplasm

• Cell wall

• Membrane bound nucleus

Animal cell lacking nuclei would also lack in -

• Chromosome

• Ribosome

• Lysosome

• Endoplasmic Reticulum

Food storing simple permanent tissue is:

• . Parenchyma

• Collenchyma

• Sclerenchyma

• none

Guard cells and stoma are found in which part of the plant?

• Parenchyma

• Collenchyma

• Sclerenchyma

• Epidermis