Diameter of pollengrains is?
2.5-200 micrometers
Exactly 10 micrometers
Always greater than 200 micrometers
Less than 1 micrometer
Related Questions
Which of the following is the primary pollination agent for both water hyacinth and water lily?
Water currents
Wind
Insects
Birds
Pollen grains of different plants, differ in
Size and shape only
Colour and design only
Size, shape and design only
Size, shape, colour and design
Anthesis is
Development of pollen
Development of anther
Opening of flower
Reception of pollen by stigma
Grass family (Poaceae) contains
Exposed stigma
Versatile anther
Both (a) and (b)
Large pollens
Choose the mis –matched option.
Wind – Cannabis – Anemophily
Water – Zoostera – Hydrophily
Insect – Salvia – Entomophily
Birds – Adansonia – Ornithophily
Embryo sac represents
megaspore
female gametophyte
megasporophyll
megagamete
Apart from insects, what other abiotic factor can contribute to the pollination of water hyacinth?
Water currents
Sunlight
Wind
Soil nutrients
How many cells and nuclei are present in a mature embryo sac of a typical angiosperm?
8 cells, 7 nuclei
7 cells, 7 nuclei
8 cells, 8 nuclei
7 cells, 8 nuclei
The ovule of an angiosperm is technically equivalent to
megaspore
megasporangium
megasporophyll
megaspore mother cell
The ovule in which the funicle, chalaza and micropyle lie in one vertical plane, is called
Campylotropous
Amphitropous
Orthotropous
Anatropous
