'Clamp connections' are observed in

• Basidiomycetes

• Zygomycetes

• Ascomycetes

• Oomycetes

Most accepted theory for ascent of sap is

• capillary theory

• root pressure theory

• pulsation theory

• transpiration pull

43.

Which of the following is not the feature of gymnosperms?

• parallel venation

• perennial plants

• distinct branches (long and short branches)

• xylem with vessels

In which form does the food transported in plants?

• Sucrose

• Fructose

• Glucose

• Lactose

The bioassay of auxin is

• avena curvature test

• callus formation

• culture of fungus

• seed dormancy

Which of the following is/ are grouped under phanerogams?

• Angiosperms

• Gymnosperms

• Pteridophytes

• Both (a) and (b)

Which of the following theory gives the latest explanation for the closure of stomata?

• ABA theory

• Munch Theory

• Starch glucose theory

• Active K⁺ transport theory

The trisomy for 21st chromosome is called

• Down's syndrome

• Turner's syndrome

• Sickle cell anaemia

• Klinfelter's syndrome

Which is correctly matched?

• Apiculture - Honey bee

• Pisciculture - Silk moth

• Sericulture - Fish

• Aquaculture - Mosquito

LH and FSH are collectively called

• oxytocin

• samatotrophins

• luteotropic

• gonadotropins