CBSE - How do Organisms Reproduce

1 How do Organisms Reproduce 

The offsprings formed as a result of sexual reproduction exhibit more variations because

(1) Sexual reproduction in lengthy process
(2) Genetic material comes from two parents of different species
(3) Genetic material comes from two parents of same species
(4) Genetic material comes from many parents

2 How do Organisms Reproduce 

Endosperm is ......

(1) 2n
(2) 3n
(3) 4n
(4)n

3 How do Organisms Reproduce 

Which one of the following is involved in the formation of endosperm?

(1) Antipodal cell 
(2) Polar nucleus
(3) Synergids 
(4) Eggcell

4 How do Organisms Reproduce 

The process which helps in perpetuation of a race

(1) Nutrition 
(2) Photosynthesis 
(3) Excretion 
(4) Reproduction

5 How do Organisms Reproduce 

What is the information source for making proteins in the nucleus of a cell ?
(1) IUCD (2) DNA (3) ER (4) ATP

6 How do Organisms Reproduce 

Select the incorrect statement regarding the male reproductive system.

(1) The formation of germ cells or sperms takes place in the testes
(2) Testes secrete the hormone oestrogen
(3) Testes are located in scrotum
(4) The sperms are carried through the vas deferens

7 How do Organisms Reproduce 

Chromosome number in the daughter cells after meiosis is
(1) 1/2 (2) 1/3 (3)1/4 (4) 1/5

8 How do Organisms Reproduce 

The cell-division which is also known as reduction cell-division is …

(1) Fission 
(2) Meiosis 
(3) Mitosis 
(4) Amitosis

9 How do Organisms Reproduce 

Ramu collected epiphyllous buds from a plant.  The plant from which he has collected these buds could be ….

(1) Murraya 
(2) Bryophyllum 
(3) Neem 
(4) Hibuscus

10 How do Organisms Reproduce 

An embryo sac of flowering plant contains........

(1) Eight cells, Seven nuclei
(2) Seven cells, Seven nuclei
(3) Seven cells, Eight nuclei
(4) Eight cells, Eight nuclei