151.

Assertion : Many visitors to the hills suffer from skin and respiratory allergy problem.

Reason : Conifer trees produce a large quantity of wind-borne pollen grains.

• If both Assertion and Reason are true and the reason is the correct explanation of the assertion

• If both Assertion and Reason are true but the reason is not the correct explanation of the assertion

• If Assertion is true statement but Reason is false

• If both Assertion and Reason are false statements

The plant part which consists of two generations, one within the other, is

• genninated pollen grain

• embryo

• unfertilized ovule

• seed

Dispersal of fruits in Opium (poppy) occur through shaking by wind by

• explosive mechanism

• parachute mechanism

• censer mechanism

• jacular mechanism

The formation of gametophyte, from sporophyte, without spore formation or without meiosis is known as :

• apospory

• apogamy

• parthenogenesis

• none of these

Anemophillous flowers have :

• sessile stigma

• small and smooth stigma

• coloured flower

• large and feathery stigma

Which of the following is ideal for studying meiosis?

• Gamete

• Pollen

• Microsporangium

• Root

To which of the following flower 'synandrous' condition is found?

• Sunflower (Helianthus sp)

• Gourd (Cucurbita sp)

• Pea (Pisum sativum)

• Lemon (Citrus sp)

Study of pollen grain is called

• Ethmology

• Palynology

• Palaeobotany

• $\mathrm{\omega }$-taxonomy

Scientific name of sunflower is

• Hibiscus rosa-sinensis

• Solanum nigrum

• Oryza sativa

• Helianthus annuus

Ornithophily refers to the pollination by which of the following

• insects

• birds

• snails

• air