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$ Self pollination in bud condition of a...

$ Self pollination in bud condition of a flower is called cleistogamy.
! Cleistogamy is usually accompanied by geocarpy.

A

If both As and R are correct and R is correct explanation of As

B

If both As and R are correct but R is not correct explanation of As

C

If As is correct, R is wrong

D

If both As and R are wrong.

Text Solution

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The correct Answer is:
A
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The condition with the united calyx in a flower is called as

For self pollination flower must be:

Which of the following features promote the chances of self pollination in plants? (1) Bud pollination (2) Chasmogamy (3) Homogamy (4) Cleistogamy (5) Protandry (6) Dioecy (7) Dichogamy (8) Self incompatibility

In Potato, self pollination is performed in (a) Bud condition (b) Cleistogamous condition (c) Bending of filaments to bring anthers in contact with stigma (d) Style bends to brings stigma in contact with anthers

If a flower has many pistil and they are fused this condition is called as

Write one advantage and one disadvantage of cleistogamy to flowering plants.

Read the following statements and find the suitable option :- (a) Generally petals are green, leaf like and protect the flower in the bud stage. (b) Generally sepals are brightly coloured to attract insects for pollination. (c) If stamens in a flower remain free (no cohesion) this is called polyandrous. (d) Each ovary bears one or more ovules attached to a flattened, cushion like placenta.

Which of the following features promote the chances of cross pollination in plants? (a) Bud pollination (e) Protandry (b) Chasmogamy(f) Dioecy (c) Homogamy (g) Dichogamy (d) Cleistogamyx (h) Self incompatibility

During self pollination of Mirabilis (a) Flowers are closed (b) Flowers are open and growing style brings the stigma in contact with anthers (c) brings anthers in contact with stigma (d) Style bends to brings stigma in contact with anthers

A: Pollination by insects is called self pollination. R: Cross pollination is between two genetically similar flowers.

DINESH PUBLICATION ENGLISH-ENVIRONMENTAL ISSUES-Assertion and reason
  1. $ Fertilization with the help of a pollen tube is called Siphonogamy. ...

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  2. $ Flower is a modified shoot which helps in sexual reproduction. ! M...

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  3. $ Self pollination in bud condition of a flower is called cleistogamy....

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  4. $ Angiosperms produce seeds, but do not produce fruits. ! Fruit and ...

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  5. A: Orthotropous ovule has micropyle at the upper end. R: Ovule is al...

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  6. $ Double fertilization and triple fusion occurs in Angiosperms. ! Tr...

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  7. $ The animals in which body temperature varies according to the surrou...

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  8. $ The animals which give birth to young ones are called oviparous. !...

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  9. A: Secondary host of Taenia solium is pig. R: Malarial parasite comp...

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  10. $ Arthropoda is the largest group in the animal kingdom. ! Honey bee...

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  11. $ Mammals are warm blooded. ! Warm blooded animals can tolerate only...

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  12. $ Notochord is present in vertebrates. ! Notochord is always formed ...

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  13. $ The first formed embryonic cavity is called blastocoel. ! Annelids...

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  14. $ Neuron means a nerve cell. ! Neurons are found in the brain.

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  15. $ The excretory organs of Flatworms are called Flame cells. ! Excret...

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  16. $ Silver fish is found in the sea. ! Fish represents warm blooded an...

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  17. $ The microfossils discovered in the earth's oldest fossil bearing roc...

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  18. $ Exo-biology is a branch of biology. ! It deals with the study of e...

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  19. $ Mangrove plants grow in the deserts. ! These plants have symbiotic...

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  20. A: Leghaemoglobin is a compound of Iron and is present in the root nod...

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