10th science Chapter 9th objective English medium

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For chapter 8 click here 👇👇

Chapter 8 how do organism reproduce

By vikas lodhi



VENUS BHATNAGAR SCIENCE INSTITUTE INDORE 

                        CHAPTER  -  9 

            ( HEREDITY  AND EVOLUTION ) 


Question 1. Fossil archaeopteryx exhibits connection between:
(a) Amphibian and fish
(b) Reptiles and fish
(c) Reptile and birds
(d) Birds and mammals

Answer:  (c) Reptile and birds

Question 2. The sex of the human child depends on the sex chromosome present in the:
(a) Egg
(b) Spenn
(c) Both (a) and (b)
(d) None of these

Answer: (b) Spenn

Question 3. Genetic information is carried out by long chain of molecules made up of:
(a) Enzymes
(b) DNA
(c) Amino acids
(d) Proteins

Answer: (b) DNA

Question 4. Which one of the following represents a ratio of monohybrid cross?
(a) 9 : 7
(b) 3 : 1
(c) 1 : 1 : 1 : 1
(d) 9 : 3 : 3 : 1

Answer: (b) 3 : 1

Question 5. On which plant Mendel carried his experiments of inheritance?
(a) Cow pea
(b) Wild pea
(c) Garden pea
(d) Pigeon pea

Answer: (c) Garden pea

Question 6. A gamete certains which of the following?
(a) Both alleles of a gene
(b) Only one allele of a gene
(c) All alleles of a gene
(d) No allele of a gene

Answer: (b) Only one allele of a gene

Question 7. Chromosomes are made up of
(a) Proteins
(b) DNA
(c) RNA
(d) All of these.

Answer: (d) All of these.

Question 8. Pea plants were more suitable than cats for Mendel’s experiments because:
(a) Cats have many genetic traits
(b) No pedigree record of cats
(c) Pea plants can be self-pollinated or fertilised
(d) Pea plants favour cross pollination.

Answer: (c) Pea plants can be self-pollinated or fertilised

Question 9. In a cross Tt × Tt, the percentage of offsprings produced having same phenotype as the parents would be:
(a) 50%
(b) 100%
(c) 25%
(d) 0%

Answer: (a) 50%

Question 10. Who proposed the laws of heredity?
(a) Darwin
(b) Mendel
(c) Morgan
(d) Dalton

Answer: (b) Mendel

For chapter no. 10 click here 👇👇

Chapter 10 reflection and refrection of light

§ THANKS FOR READING §


©Copyright Venus Bhatnagar science Institute indore( m.p) 


Address :[Kalam House]  6,stadium ground Nanda Nagar indore mp. 

     [Bose House] Puneet-pawan apartment slice A sector B scheme no.78 vijay nagar indore mp. 


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By vikas lodhi



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