Cell: Descriptive Type Answer of Concise Biology Selina Solutions for ICSE Class 10

Cell: Descriptive Type Answer of Concise Biology Selina Solutions for ICSE Class 10 Ch-1. In this article you will get the solutions of Descriptive Type Questions as council latest syllabus. Visit official website CISCE for detail information about ICSE Board Class-10 Biology.

Cell: Descriptive Type Answer of Concise Biology Selina Solutions for ICSE Class 10 Ch-1

Board	ICSE
Subject	Biology
Class	10
Book	Selina Concise
Chapter-1	Cell: The Structural and Functional Unit of Life
Topics	Solutions of Descriptive Type Questions
Session	2024-25

Solutions of Descriptive Type Questions

Cell: Descriptive Type Answer of Concise Biology Selina Solutions for ICSE Class 10 Ch-1

Que-1: Define the following terms:

(a) Cell

(b) Organelles

(d) Protoplasm

(e) Nucleus

Sol:

(a) Cell — Cell is the structural and functional unit of life capable of independent existence. All cells are basically alike in chemical composition and metabolic processes and arise from a pre-existing cell.

(b) Organelles — Organelles are specialized and membrane-bound, living structures in a cell concerned with definite functions.

(c) Cytoplasm — Cytoplasm is the part of the cell which is inside the cell membrane and outside the nucleus. It is a semi-liquid substance and contains several organelles, each concerned with a specific function.

(d) Protoplasm — The living parts of the cell which consist of cytoplasm, nucleus and other living bodies collectively constitute protoplasm or protoplast.

(e) Nucleus — Nucleus is a large spherical body lying nearly in the centre of the cytoplasm. It is surrounded by a double layered nuclear membrane with nuclear pores.

Que-2: Distinguish between the following pairs:

(a) Plant cell and animal cell

(b) Cell wall and cell membrane

(d) Chloroplast and chromoplast

Sol:

(a) Plant Cell and Animal Cell

Features	Plant cell	Animal cell
Size	It is usually larger in size.	It is usually smaller in size.
Cell wall	It consists of a definite cell wall made up of cellulose.	It lacks a cell wall.
Vacuoles	It consists of large and prominent vacuoles.	It consists of small and temporary vacuoles.
Cytoplasm	It consists of less dense cytoplasm.	It consists of denser and more granular cytoplasm.

(b) Cell Wall and Cell Membrane

Cell Wall	Cell Membrane
It is the outermost covering in plant cells.	It is the outermost covering in animal cells.
It is non-living and rigid layer.	It is thin, flexible and living membrane.
It is freely permeable.	It is semi-permeable.
It is made up of cellulose.	It is made up of lipoproteins.

(c) Centrosome and Chromosome

Centrosome	Chromosome
It is a clear space of cytoplasm located close to the nucleus.	It is a highly coiled structure contained within the nucleus.
Usually one centrosome is present per cell.	Several chromosomes can be present per cell.
It consists of two rod-like structures made of protein tubulin.	It consists of DNA coiled around histone protein core.
It initiates and regulates cell division.	It transfers hereditary characters from parents to offspring.

(d) Chloroplast and Chromoplast

Chloroplast	Chromoplast
It is green in colour.	It is variously coloured.
It contains the pigment chlorophyll.	It contains pigments such as xanthophyll and carotene.
It traps solar energy for photosynthesis.	It imparts colour to flowers and fruits.