A dioecious flowering plant prevents both

(1) autogamy and xenogamy

(2) autogamy and geitonogamy

(3) geitonogamy and xenogamy

(4) cleistogamy and xenogamy

The morphological nature of the edible part of coconut is

(1) perisperm

(2) cotyledon

(3) endosperm

(4) pericarp

Pollination in water hyacinth and water lily is brought about by the agency of

(1) water

(2) insects or wind

(3) birds

(4) bats

Which one of the following statements is not true?

The coconut water from tender coconut represents

(1) fleshy mesocarp

(2) free-nuclear proembryo

(3) free-nuclear endosperm

(4) endocarp

Which of the following statements is not correct?

(1) Insects that consume pollen or nectar without bringing about pollination are called pollen nectar robbers

(2) Pollen germination and pollen tube growth are regulated by chemical components of pollen interacting with those of the pistil

(3) Some reptiles have also been reported as pollinators in some plant species

(4) Pollen grains of many species can germinate on the stigma of a flower, but only one pollen tube of the same species grows into the style

Seed formation without fertilisation in flowering plants involves the process of

(1) budding

(2) somatic hybridization

(3) apomixis

(4) sporulation

Filiform apparatus is characteristic feature of

1. generative cell

2. nucellar embryo

3. aleurone cell

4. synergids

Which of the following are the important floral rewards to the animal pollinators?

(1) Colour and large size of flower

(2) Nectar and pollen grains

(3) Floral fragrance and calcium crystals

(4) Protein pellicle and stigmatic exudates

Placenta and pericarp are both edible portions in

(1) apple

(2) banana

(3) tomato

(4) potato