Question

a) Select the correct pair –

i) Grafting – chrysanthemum ii) micropropagation – mango

iii) cutting – grapes iv) stem – sweet potato


b) Which of the following statement, is correct regarding significance of

mitosis –

i) It helps in alternation of generation

ii) It produces haploid gametes

iii) It regenerates lost organs in the body of some animals

iv) It helps in production of new variation leading to evolution


c) Identify which of the following is a recesive trait –

i) shape of pod – inflated ii) position of flower – terminal

iii) shape of seed – round iv) colour of seed – yellow


d) When both parents are carrier then what is the probability of the

offsprings having thalassemia?

i) 25% ii) 75%

iii) 50% iv) 100%


e) The gas which was absent in the environment during origin of life is –

i) Hydrogen ii) Oxygen

iii) Methane iv) Ammonia


f) The feature of analogous organ is –

i) Different in origin and perform different functions

ii) Identical in origin and perform different functions

iii) Identical in origin and perform same functions

iv) Different in origin and perform same functions
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Answer 1

Answer:

a-(iv)

b- (iv)

c- (iv)

d- (iii)

d- (ii)

d- (i)