Which of the following maintain the constant number of chromosomes generation after generation?

• Meiosis

• Endomitosis

• Mitosis

• Amitosis

Cotton belongs to family :

• Solanaceae

• Cucurbitaceae

• Leguminoseae

• Malvaceae

Terpentine is obtained from :

• flowers of angiosperm

• wood of gymnosperms

• pteridophytes

• bacteria

Pinus seed is originated in :

• capsule

• microsporophyll

• microsporangia

• megasporophyll

The endosperm of Pinus is :

• haploid

• diploid

• triploid

• polyploid

From which part of Cocos nucifera, coir is obtained :

• Endocarp

• Mesocarp

• Epicarp

• Any part of fruit

Plant cell is differ from animal cell because of

• the presence of cell wall and absence of chlorophyll in plant cell

• the presence of cell wall and chlorophyll in plant cell

• the absence of cell wall and presence of chloroplast in animal cell

• the absence of cell wall and presence of chlorophyll in plant cell

DNA remains absent in :

• chloroplast

• nucleus

• peroxysomes

• chromosome

Photosynthetic unit is :

• glyoxysome

• spherosome

• microsome

• quantasome

The 'power house' of cell is :

• nucleus

• golgi body

• mitochondria

• chloroplast