SEXUAL REPRODUCTION IN FLOWERING PLANTS

Flowering initiate and flowering promote

Ethylene and auxins

Diameter of pollen

25-50 micrometer

Viability of rice and wheat

Viability of rsl

30 mins, few months

Pollen viability depends on

Temp and humidity (inversely proportional)

Paddy and wheat have how many ovules within the ovary

One ovule per ovary

Gymnospermic ovule

Only one integument

Which plants have both chasmogamous and cleistogamous flowers

Viola,commelina,oxalis

Hydrophily is used in how many angiospermic genera

30

Tallest flower?

Amorphophallus(it offers a safe place to lay eggs as a reward)

Outbreeding devices

1. Heterogamy

2. Heterostyly

3. Self incompatibility

4. Unisexual flowers

Protogynous and protandrous

Female develops first, male develops first

Describe endospermic development