Ovary is half -inferior in the flowers of 

• guava

• plum

• brinjal

• brinjal

Phototropic curvature is the result of uneven distribution of 

• gibberellin

• phytochrome

• cytokinins

• cytokinins

Male and female gametophytes are independent and free - living in

• mustard

• castor

• Pinus

• Pinus

The technical term used for the androecium in a flower of China rose (Hibiscus rosa siensis( is 

• monadelphous

• diadelphous

• polyandrous

• polyandrous

Virus envelope is known is 

• capsid

• virion

• nucleoprotein

• nucleoprotein

26.

During mitosis ER and nucleolus begin to disappear at 

• late prophase

• early metaphase

• late metaphase

• late metaphase

The free-living, anaerobic nitrogen - fixer is 

• Beijerinckia

• Rhodospirillum

• Rhizobium

• Rhizobium

What is true about RBCs in humans?

• They carry about 20-25 percent of CO₂

• They transport 99.5 percent of O₂

• They transport about 80 percent oxygen only and the rest 20 percent of it is transported in dissolved state in blood plasma

• They transport about 80 percent oxygen only and the rest 20 percent of it is transported in dissolved state in blood plasma

The main arean of various types of activities of a cell is

• Plasma membrane

• mitochondrion

• cytoplasm

• cytoplasm

The principal nitrogenous exceretory compound in humans is synthesised

• in kidneys but eliminated mostly through the liver

• in kidneys as well as eliminated by kidneys

• In liver and also eliminated by the same through bile

• In liver and also eliminated by the same through bile