CBSE - How do Organisms Reproduce

1 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

2 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

3 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

4 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

5 How do Organisms Reproduce 

The anther contains
(1) Sepal (2) Carpel (3) Petal (4) Pollen grains

6 How do Organisms Reproduce 

Identify the correct statement from below

(1) The Zygote develops into embryo-sac
(2) Synergids are situated near the chalazal end of embryosac
(3) Mature embryo-sac has eight cells
(4) Secondary nucleus in a mature embryo-sac is diploid

7 How do Organisms Reproduce 

Isogamy, Aniosogamy and Oogamy types of sexual reproduces occur in

(1) Muncor Sp
(2) Monocystis Sp
(3) Spirogyra Sp
(4) Chlamydomonous Sp

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 

Endosperm is ......

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

10 How do Organisms Reproduce 

Which of the following modes of asexual reproduction is observed in Hydra ?

(1) Binary fission and budding
(2) Multiple fission and regeneration
(3) Regeneration and budding
(4) Budding and fragmentation