(English Medium) ICSE Class 10 - CISCE Important Questions for Biology

Give technical terms for A sudden heritable change in the gene

Give technical terms for Repeated units of DNA molecule

Name the following:

The number of chromosomes present in a nerve cell of a human being.

Choose the ODD one out from the following terms given and name the CATEGORY to which the others belong

Centrosome.Cell wall, Cell membrane, Large vacuoles

Give appropriate biological or technical terms for the following :

The condition in which a pair of chromosomes carries similar alleles of a particular character.

A pea plant which is homozygous for green pods which are inflated [GGII] is crossed with a homozygous plant for yellow pods which are constricted [ggii]. Answer the following questions;

a) Give the phenotype and genotype of the F1 generation.

Which type of pollination has occurred to produce F1 generation?

b) Write the phenotypic ratio of the F2 generation

c) Write the possible combinations of the gametes that can be obtained if two F1 hybrid plants are crossed.

d) State Mendel’s law of ‘Segregation of Gametes’

5) What is the scientific name of the plant which Mendel used for his experiments on inheritance?

 Correct and rewrite the statements by changing the biological term that is underlined for the statement: 
The theory of Inheritance of Acquired Characters was proposed by Watson and Crick. 

Identify the ODD term in each set and name the CATEGORY to which the remaining three belong :
Example : glucose, starch, cellulose, calcium
Odd term : calcium
Category : others are different types of carbohydrates 
Chicken pox, Colour blindness, Haemophilia, Albinism 

 Expand the following biological abbreviations : 
 DNA 

 In Mendel’s experiments, tall pea plants (T) are dominant over dwarf pea plants (t). 
What is the phenotype and genotype of the F1 generation if a homozygous tall plant is crossed with a homozygous dwarf plant? 

 In Mendel’s experiments, tall pea plants (T) are dominant over dwarf pea plants (t). 
 Draw a Punnett square board to show the gametes and offspring when both the parents are heterozygous for tallness.

 In Mendel’s experiments, tall pea plants (T) are dominant over dwarf pea plants (t). 
What is the phenotypic ratio and genotypic ratio of the above cross in (ii)? 

 In Mendel’s experiments, tall pea plants (T) are dominant over dwarf pea plants (t). 
State Mendel’s Law of Dominance. 

In Mendel’s experiments, tall pea plants (T) are dominant over dwarf pea plants (t).
What is a Dihybrid Cross? 

Duplicated chromosomes are joined at a point termed ______.

Differentiate Between Genotype and Phenotype.

The sex chromosome in a human ovum is ______.

A pure breeding red flower variety of pea plant (RR) is crossed with a pure breeding white flower variety of pea plant (rr). Draw a Punnett square to find out the Phenotypic and Genotypic ratios of the progeny belonging to the F₂ generation.

A zygote which has Y chromosome inherited from the father will develop into a ______.

Four friends P, Q, R and S were discussing the examples of genetic disorders. The examples they quoted were as follows:

P. Colour blindness and Malaria

Q. Albinism and Cholera

R. Haemophilia and Colour blindness

S. Haemophilia and Albinism

Who gave the correct examples?