Which among the following is not a feature of pistil?

(1) Monocarpellary

(2) Syncarpous

(3) Monosporic

(4) Apocarpous

Subtopic:  Pistil: Female Gametophyte |
 83%
From NCERT
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A, B, C, D in the following diagram respectively are:-

(1) Hilum, funicle, inner integument, micropyle

(2) Hilum, funicle, outer integument, micropyle

(3) Funicle, outer integument, nucellus, chalazal pole

(4) Funicle, outer integument, nucellus, micropylar end

Subtopic:  Pistil: Ovule |
 86%
From NCERT
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Microsporangium is generally surrounded by 4 wall layers. Which of the following 3 wall layers perform the function of protection and help in the dehiscence of anther to release the pollen?

(1) Epidermis, tapetum, endothecium

(2) Epidermis, aril, endothecium

(3) Epidermis, endodermis, mesocarp

(4) Epidermis, middle layer and endothecium

Subtopic:  Stamen: Microsporangium |
 93%
From NCERT
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The above diagram shows some stages in microgametogenesis. Identify A, Band C:
               A                               B                              C
(1) Symmetric spindle        Generative cell           Vegetative cell

(2) Symmetric spindle        Vegetative cell           Generative cell

(3) Asymmetric spindle       Vegetative cell           Generative cell

(4) Asymmetric spindle       Generative cell           Vegetative cell

Subtopic:  Stamen: Male Gametophyte |
 70%
From NCERT
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The viability of pollen grains depends upon:
(1) Prevailing temperature

(2) Prevailing humidity

(3) Genetic potentiality of the concerned species

(4) All of the above

Subtopic:  Stamen: Male Gametophyte |
 96%
From NCERT
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Which of the following has the least pollen viability?

(1) Cereals like wheat and rice          

(2) Members of Rosaceae

(3) Members of Leguminoseae           

(4) Members of Solanaceae

Subtopic:  Stamen: Male Gametophyte |
 94%
From NCERT
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Match the Column-I with Column-II:
    Column-I                                          Column-II
A. Funicle                                 I. Mass of cells within ovule with more food
B. Hilum                                  II. Basal part of ovule
C. Integument                        III. One or 2 protective layers of ovule
D. Chalaza                              IV. Region where body of ovule fuses with funicle
E. Nucellus                               V. Stalk of ovule
(1) A - I, B - II, C - III, D - IV, E - V           

(2) A - V, B - IV, C - III, D - II, E - I

(3) A - IV, B - II, C - I, D - III, E - V           

(4) A - I, B - III, C - V, D - II, E - IV

Subtopic:  Pistil: Ovule |
 91%
From NCERT
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Identify A, B, C and D structures shown in above diagram of female gametophyte:

A B C D
1. Synergid Polar nuclei Central cell Antipodal cells
2. Antipodal cells Polar nuclei Central cell Synergids
3. Antipodal cells Polar nuclei Megaspore mother cell Synergids
4. Filiform apparatus Polar nuclei Central cell Antipodal cell

Subtopic:  Pistil: Ovule |
 79%
From NCERT
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Go through the following statements:

Flowers are bisexual and homogamous maturing anther and stigma of a flower at the same time.

Mechanical devices bringing anthers and stigma close together in a bisexual chasmogamous flower.

Cleistogamy (bisexual flowers remain closed)

Anther and stigma of an intersexual flower mature in bud condition.

The above contrivances favour:

(1) Allogamy                  

(2) Autogamy       

(3) Xenogamy      

(4) Cross pollination

Subtopic:  Pollination & Outbreeding Devices |
 87%
From NCERT
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Find out the correct option:
(1) Among animals, insects, particularly bees are the dominant biotic pollinating agents

(2) Often flowers of animal- pollinated plants are specially adapted for particular species of animals

(3) In some species floral rewards like edible nectar, pollen grains, shelter for egg laying are given to pollinating animals

(4) All the above are correct

Subtopic:  Pollination & Outbreeding Devices |
 91%
From NCERT
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