Abiotic pollination is most commonly brought about by:
 
  • Wind
  • Water
  • Soil
  • Bees
Apomixis is:
 
  • the development of fruit without fertilization
  • production of seeds without fertilization
  • unfertilized eggs developing into males
  • unfertilized eggs developing into females
Both autogamy and geitonogamy are prevented in:
 
  • Castor
  • Papaya
  • Maize
  • Garden pea
Filiform apparatus is a part of:
 
  • synergids at the chalazal end of the female gametophyte
  • antipodals at the chalazal end of the female gametophyte
  • synergids at the micropylar end of the female gametophyte 
  • antipodals at the micropylar end of the female gametophyte
Thalamus does not contribute to the formation of fruit in:
 
  • Apple
  • Strawberry
  • Cashew
  • Banana
Phoenix dactylifera is commonly known as:
 
  • Deadly nightshade
  • Date palm
  • Lupine
  • Methselah
In grass embryos, a flap-like structure present opposite to the scutellum is called as:
 
  • coleoptile
  • coleorrhiza
  • epiblast
  • hypoblast
Antipodal is an adjective that means ‘diametrically opposite’. Where are the antipodal cells located in an embryosac of an angiosperm?
 
  • At the micropylar end
  • At the chalazal end
  • In the middle
  • There are three – one at micropylar and two at chalazal end
In the fully developed female gametophyte of a typical angiosperm:
 
  •     three cells are grouped together at the chalazal end to constitute the egg apparatus
  •     three cells are grouped together at the micropylar and are called antipodals
  •     antipodals have special cellular thickenings called as filiform apparatus
  •     polar nuclei are located in the large central cell
Regarding pollen grains:
I.    Exine is made up of sporopollenin
II.    Generative cell is bigger than the vegetative cell
III.    Generative cell divides meiotically to produce male gametes
 
  •     Only I is correct
  •     Only I and III are correct
  •     Only II is correct
  •     I, II and III are correct
Plants do not contain many parts that can be easily fossilized. Which of the following has proved helpful in preserving pollens as fossils?
  • Pollenkit
  • Cellulosic intine
  • Callose in pollen tetrad
  • Sporopollenin
A persistent nutritive tissue of a seed derived from the nucellus and deposited external to the embryo sac —distinguished from endosperm is known as:
  • Tegmen
  • Chalaza
  • Perisperm
  • Hilum
Identify the part labelled as 3 in the given diagram:
  • Micropyle
  • Nucellus
  • Funiculus
  • Hilum
The only type of pollination which brings genetically different types of pollen grains to the stigma is:
 
  • Cleistogamy
  • Chasmogamy
  • Geitonogamy
  • Xenogamy
In ‘double fertilization’ in angiosperms:
I. Syngamy results in formation of zygote
II. Triple fusion results in the formation of primary endosperm nucleus
 
  • Only I is correct
  • Only II is correct
  • Both I and II are correct
  • Both I and II are incorrect
The female gametophyte in the angiosperms is:
 
  • 7 celled and 8 nucleate                                 
  • 8 celled and 7 nucleate
  • 7 celled and 7 nucleate                                 
  • 8 celled and 8 nucleate
The shield like cotyledon in grass [monocot] seeds is called :
 
  • Plumule
  • Scutellum
  • Perisperm
  • Coleoptile

Nucellar polyembryony is seen in:
  • Citrus and Mango
  • Castor and Pea
  • Grasses and Mustard
  • Orchids and China rose

In an angiosperm, the ovule is attached to the placenta by a stalk called:
 
  • Funicle
  • Raphe
  • Hilum
  • Chalaza

Wind pollinated flowers are characterized by:
  • being heavily scented   
  • highly attractive colours
  • non-sticky light pollen grains, well exposed stamen, large feathery stigma
  • ribbon shaped pollen with mucilaginous covering

Endosperm may persist in mature seed in:
 
  • Pea and Apple
  • Groundnut and Wheat
  • Beans and Mango
  • Castor and Coconut
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