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Arrange the following terms in the corre...

Arrange the following terms in the correct developmental sequence: pollen grain, sporogenous tissue, microspore tetrad, pollen mother cell, male gametes

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Sporogenous tissue `rarr` Pollen mother cell `rarr` Micro spore tetrad `rarr` Pollen grain `rarr` male gametes
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Complete the following flow chart Pollen Mother cell rarr Pollen tetrad rarr

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Which of the following is not correct? (A) outer layer of pollen grain is made up of sporopollenin (B) Pollen grain of many species cause strong allergy (C) Pollen grain stored in liquid nitrogen can be used in crop breeding programme (D) Tapetum helps in dehiscence of anther

An anther has 1200 pollen grains. How many pollen mother cells must have been there to produce them ?

Study the following statement and choose the option: (I) Tapetum nourishes the developing pollen grains (II) Hilum represents the junctions between ovule and funicle (III) In aquatic plant such as water hyacinth and water lily, pollination by water (IV) The primary endosperm nucleus is triploid (A) I and II are correct but III and IV are incorrect (B) I, II and IV are correct but III is incorrect (C) II, III and IV are correct but I is incorrect (D) I and IV are correct but II and III are incorrect

What is the function of the two male gametes produced by each pollen grain in angiosperms

Given below are the events that are observed in an artificial hybridization programme. Arrange them in the correct sequential order in which they are followed in the hybridisation programme. (a) Re-bagging (b) Selection of parents (c ) Bagging (d) Dusting the pollen on stigma (e ) Emasculation (f ) Collection of pollen from male parent

Identify the name of processes (A&B) in the given sequence Microspore mother cell overset(A)to Microspore overset(B)to male gametophyte

Which option is correct for the given statmeent X, Y and Z ? X : Pollen grains are the carriers of male gametes. Y : Pollen grain are produced in stigma. Z : Pollen grain are transferred to anthers. (A) X is wrong, Y and Z are correct (B) X, Y and Z are correct (C) X and Y are correct and Z is wrong (D) X is correct, Y and Z are wrong.

KUMAR PRAKASHAN-SEXUAL REPRODUCTION IN FLOWERING PLANTS-Section -D (Textual Exercise)
  1. Name the parts of an angiosperm flower in which development of male an...

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  2. Differentiate between microsporogenesis and megasporogenesis. Which ty...

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  3. Arrange the following terms in the correct developmental sequence: pol...

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  4. With a neat, labelled diagram describe the parts of a typical angiospe...

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  5. What is meant by monosporic development of female gametophyte ?

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  6. With a neat diagram explain the 7-celled, 8-nucleate nature of the fem...

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  7. What are chasmogamous flower? Can cross pollination occur in cleistoga...

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  8. Mention two strategies evolved to prevent self pollination in flowers

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  9. What is self-incompatibility ? Why does self pollination not lead to s...

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  10. What is bagging technique? How is it useful in a plant breeding progra...

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  11. What is triple fusion? Where and how does it take place? Name the nucl...

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  12. What do you think the zygote is dormant for sometime in a fertilised o...

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  13. Differentiate between : (a) Hypocotyl and Epicotyl (b) Coleoptile and...

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  14. Why is apple called a false fruits? Which part (s) of the flower forms...

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  15. What is meant by emasculation ? When and why does a plant breeder empl...

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  16. If one can induce parthenocarpy through the application of growth subs...

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  17. Explain the role of tapetum in the formation of pollen grain wall

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  18. What is Apomixis? Give its importance

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