Typical growth curve in plants is

• sigmoid

• linear

• Stair-steps shaped

• Stair-steps shaped

12.

Typical growth curve in plants is 

• sigmoid

• linear

• stair-steps shaped

• stair-steps shaped

A drupe develop in 

• Wheat

• pea

• tomato

• tomato

Phototropic curvature is the result of uneven distribution of 

• gibberellin

• phytochrome

• cytokinins

• cytokinins

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

• monadelphous

• diadelphous

• polyandrous

• polyandrous

One of the commonly used plant growth hormone in tea plantations is 

• ethylene

• abscisic acid

• Zeatin

• Zeatin

Root development is promoted by

• abscisic acid

• auxin

• gibberellin

• gibberellin

Stroma in the chloroplasts of higher plants contains

• light -independent reaction enzymes

• Light -dependent reaction enzymes

• ribosomes

• ribosomes

One of the synthetic auxins is

• NAA

• IAA

• GA

• GA

In which one of the following, the male and female gametophytes don't have free -living independent existence ?

• Pteris

• Funaria

• Polytrichum

• Polytrichum