A mechanism of self pollination in which flowers open but only after pollination has take place

A mechanism of self pollination in which flowers open but only after pollination has take place
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 Ans. Chasmogamy
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Which one of the following statements is correct? (a) Cleistogamous flowers are always autogamous. (b) Xenogamy occurs only by wind pollination. (c) Chasmogamous flowers do not open at all. (d) Geitonogamy involves the pollen and stigma of flowers of different plants.

Description : Which one of the following statements is correct? (a) Cleistogamous flowers are always autogamous. (b) Xenogamy occurs only by wind pollination. (c) Chasmogamous flowers do not open at all. (d) Geitonogamy involves the pollen and stigma of flowers of different plants.

Last Answer : (a) Cleistogamous flowers are always autogamous.

$ Pollination by insects is called self pollination. ! Cross pollination is between two genetically similar flowers.

Description : $ Pollination by insects is called self pollination. ! Cross pollination is between two genetically similar flowers.

Last Answer : $ Pollination by insects is called self pollination. ! Cross pollination is between two genetically similar flowers ... D. If both As and R are wrong.

Mention three strategies evolved to prevent self-pollination in flowers.

Description : Mention three strategies evolved to prevent self-pollination in flowers.

Last Answer : Ans: 1. Dichogamy: stigma and anther mature at different times. 2. Heterostyly: stigma and anther are placed at different levels. 3. self-incompilibility

Pollination and fertilization occurs before opening of flower is termed as

Description : Pollination and fertilization occurs before opening of flower is termed as

Last Answer : Ans. Cleistogamy

Often Cross pollination crops are

Description : Often Cross pollination crops are

Last Answer : Ans. Safflower, Arhar, Cotton and Sorghum

What type of pollination takes place in Vallisneria? (a) Pollination occurs in submerged condition by water. (b) Flowers emerge above surface of water, and pollination occurs by insects. (c) Flowers emerge above water surface, and pollen is carried by wind. (d) Male flowers are carried by water currents to female flowers at surface of water.

Description : What type of pollination takes place in Vallisneria? (a) Pollination occurs in submerged condition by water. (b) Flowers emerge above surface of water, and pollination occurs by insects. (c) Flowers ... wind. (d) Male flowers are carried by water currents to female flowers at surface of water.

Last Answer : (d) Male flowers are carried by water currents to female flowers at surface of water

Bisexual flowers are present in both Clerodendron and Scrophularia. Still cross pollination takes place. How?

Description : Bisexual flowers are present in both Clerodendron and Scrophularia. Still cross pollination takes place. How?

Last Answer : Ans: In clerodendron the androecium attains maturity earlier than gynoecium and in Scrophulria the gynoecium attains maturity earlier than androecium.  

The pollination of maize takes place by (1) self-pollination (2) pollination by insects (3) pollination by air (4) pollination by rain

Description : The pollination of maize takes place by (1) self-pollination (2) pollination by insects (3) pollination by air (4) pollination by rain

Last Answer : (3) pollination by air Explanation: Maize (called corn in some parts of the world) is pollinated by air. The male anthers let go of their pollen and it blows over to a nearby female flower on ... a corn, rather than both sexes in one flower. Maize flowers have evolved to use air for pollination.

The pollination of maize takes place by (1) self-pollination (2) pollination by insects (3) pollination by air (4) pollination by rain

Description : The pollination of maize takes place by (1) self-pollination (2) pollination by insects (3) pollination by air (4) pollination by rain

Last Answer : pollination by air

Why colorful flowers are helpful for pollination ?

Description : Why colorful flowers are helpful for pollination ?

Last Answer : Insects or birds float around in the attraction of the beautiful color of colorful flowers. At this time the pollen sticks to the carrier. When this carrier sits on another flower of the ... the work of pollination is done without their knowledge. So colored flowers are conducive to pollination.

$ Flower of Rafflesia is largest sized. ! Large flowers have wind pollination

Description : $ Flower of Rafflesia is largest sized. ! Large flowers have wind pollination

Last Answer : $ Flower of Rafflesia is largest sized. ! Large flowers have wind pollination A. If both As and R are ... is wrong D. If both As and R are wrong.

Pollination between two flowers of one plant is called......?

Description : Pollination between two flowers of one  plant is called......?

Last Answer : gytanogamy

Pollination between two such flowers situated on the same plant is known a. Autogamy b. Allogamy c. Cross pollinated d. None of these

Description : Pollination between two such flowers situated on the same plant is known a. Autogamy b. Allogamy c. Cross pollinated d. None of these

Last Answer : Allogamy

First and the heaviest flower drop in fruit plants occurs due to : a. Structural defects in the flowers b. Lack of pollination c. Non fertilization d. All of the abov

Description : First and the heaviest flower drop in fruit plants occurs due to : a. Structural defects in the flowers b. Lack of pollination c. Non fertilization d. All of the abov

Last Answer : All of the abov

The pollination between two different flowers present on same plant is called as

Description : The pollination between two different flowers present on same plant is called as

Last Answer : The pollination between two different flowers present on same plant is called as – Geitonogamy

Differentiate between ‘self-pollination’ and ‘cross-pollination’. Describe double fertilisation in plants. -Science

Description : Differentiate between ‘self-pollination’ and ‘cross-pollination’. Describe double fertilisation in plants. -Science

Last Answer : answer:

Difference between self and cross pollination? -Biology

Description : Difference between self and cross pollination? -Biology

Last Answer : answer:

Advantages of self pollination. -Biology

Description : Advantages of self pollination. -Biology

Last Answer : answer:

Disadvantages of self pollination. -Biology

Description : Disadvantages of self pollination. -Biology

Last Answer : answer:

Name the type of pollination in self-incompatible plants. -Biology

Description : Name the type of pollination in self-incompatible plants. -Biology

Last Answer : answer:

What is self pollination in plants? -Biology

Description : What is self pollination in plants? -Biology

Last Answer : answer:

Difference between self pollination and cross pollination -Biology

Description : Difference between self pollination and cross pollination -Biology

Last Answer : answer:

Why is cross pollination preferable to self pollination? -Biology

Description : Why is cross pollination preferable to self pollination? -Biology

Last Answer : answer:

What are the benefits of self-pollination ?

Description : What are the benefits of self-pollination ?

Last Answer : There are several benefits to self-pollination. The advantages are discussed below - self-pollination reduces pollen waste , eliminates the need to rely on carriers for pollination and ensures ... Self-pollination plays an important role in maintaining the characteristic purity of a plant species.

What is self-pollination ?

Description : What is self-pollination ?

Last Answer : Self-pollination is when the pollen spontaneously transfers from the anther into the uterus of the same flower or any other flower of the same plant.

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

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

Last Answer : $ Self pollination in bud condition of a flower is called cleistogamy. ! Cleistogamy is usually accompanied by ... D. If both As and R are wrong.

Self pollination will lead to – (1) inbreeding (2) rare breeding (3) overbreeding (4) outbreeding

Description : Self pollination will lead to – (1) inbreeding (2) rare breeding (3) overbreeding (4) outbreeding

Last Answer : (1) inbreeding Explanation: Self-pollination can lead to inbreeding depression, or the reduced health of the species, due to the breeding of related specimens. This is why many flowers that could potentially self-pollinate have a built-in mechanism to avoid it.

A clone is a group of individuals obtained through – (1) Hybridisation (2) Micropropagation (3) Cross pollination (4) Self pollination

Description : A clone is a group of individuals obtained through – (1) Hybridisation (2) Micropropagation (3) Cross pollination (4) Self pollination

Last Answer : (2) Micropropagation Explanation: Micropropagation is the practice of rapidly multiplying stock plant material to produce a large number of progeny plants, using modern plant tissue cultore ... to accelerated growth compared to similar plants produced by conventional methods - like cuttings.

Self pollination is a form of: a. Inbreeding b. Out breeding c. Random mating d. None of these

Description : Self pollination is a form of: a. Inbreeding b. Out breeding c. Random mating d. None of these

Last Answer : Inbreeding

Nature of pollination in cucurbits is: a. Highly cross pollinated b. Oftenly cross pollinated c. Highly self pollinated d. None of above

Description : Nature of pollination in cucurbits is: a. Highly cross pollinated b. Oftenly cross pollinated c. Highly self pollinated d. None of above

Last Answer : Highly cross pollinated

Nature of pollination in cucurbits is: a. Highly cross pollinated b. Oftenly cross pollinated c. Highly self pollinated d. None of above

Description : Nature of pollination in cucurbits is: a. Highly cross pollinated b. Oftenly cross pollinated c. Highly self pollinated d. None of above

Last Answer : Highly cross pollinated

.Angiosperms have dominated the land flora primarily because of their (a) power of adaptability in diverse habitat (b) property of producing large number of seeds (c) nature of self pollination (d) domestication by man

Description : .Angiosperms have dominated the land flora primarily because of their (a) power of adaptability in diverse habitat (b) property of producing large number of seeds (c) nature of self pollination (d) domestication by man

Last Answer : (a) power of adaptability in diverse habitat

(A) MENTION ANY FOUR STRATEGIES ADOPTED BY FLOWERING PLANTS TO PREVENT SELF-POLLINATION. (B) DEFINE THE TERM EMASCULATION.

Description : (A) MENTION ANY FOUR STRATEGIES ADOPTED BY FLOWERING PLANTS TO PREVENT SELF-POLLINATION. (B) DEFINE THE TERM EMASCULATION.

Last Answer : ANS.(a) (i) SELF INCOMPATIBILITY (ii) PRODUCTION OF UNICELLULAR FLOWERS (iii) ANTHERS AND STIGMA ARE PLACED AT DIFFERENT POSITIONS. (iv) MATURATION OF ANTHER AND STIGMA IS NOT ... EMASCULATION: REMOVAL OF ANTHER BEFORE MATURITY SO AS TO ENSURE CROSS POLLINATION IN SELF POLLINATING FLOWERS.

Which one of following is true about chloroplast (A) It is underground part (B) It helps in pollination (C) Self replicating organelle (D) Involve in Lipid synthesis

Description : Which one of following is true about chloroplast (A) It is underground part (B) It helps in pollination (C) Self replicating organelle (D) Involve in Lipid synthesis

Last Answer : (C) Self replicating organelle

A clone is a group of individuals obtained through (1) Hybridisation (2) Micropropagation (3) Cross pollination (4) Self pollination

Description : A clone is a group of individuals obtained through (1) Hybridisation (2) Micropropagation (3) Cross pollination (4) Self pollination

Last Answer : Micropropagation

Self pollination will lead to (1) inbreeding (2) rare breeding (3) overbreeding (4) outbreeding

Description : Self pollination will lead to (1) inbreeding (2) rare breeding (3) overbreeding (4) outbreeding

Last Answer : inbreeding

Rose species having large flowers in clusters

Description : Rose species having large flowers in clusters

Last Answer : Ans. Floribundas

Gynomonoecious flowers are found in

Description : Gynomonoecious flowers are found in

Last Answer : Ans. Cucumber

Rosetting of flowers and double seed formation is the symptoms of

Description : Rosetting of flowers and double seed formation is the symptoms of

Last Answer : Ans. Pink Bollworm (Pectinophora gossypiella)

When male and female flowers occur on different plants

Description : When male and female flowers occur on different plants

Last Answer : Ans. Diocious

When male and female flowers occur on the same plant

Description : When male and female flowers occur on the same plant

Last Answer : Ans. Monocius

Pollen from a flower of one plant falls on the stigmas of other flowers of the same plant.

Description : Pollen from a flower of one plant falls on the stigmas of other flowers of the same plant.

Last Answer : Ans. Geitonogamy

When male and female flowers of a hermaphrodite flower matures at different time

Description : When male and female flowers of a hermaphrodite flower matures at different time

Last Answer : Ans. Dichogamy

When pollen grains from flower of one plant transferred to receptive stigmas of flowers of another plant

Description : When pollen grains from flower of one plant transferred to receptive stigmas of flowers of another plant

Last Answer : Ans. Cross pollination/Allogamy

When pollen grains from an another falls on receptive stigma of the same flowers

Description : When pollen grains from an another falls on receptive stigma of the same flowers

Last Answer : Ans. Self pollination

A self supporting community - plants and animals interacting with each other and the nonliving environment to provide a balanced system is a

Description : A self supporting community - plants and animals interacting with each other and the nonliving environment to provide a balanced system is a

Last Answer : Ans. Ecosystem

Isolation distance for self pollinated crops i.e. rice, wheat

Description : Isolation distance for self pollinated crops i.e. rice, wheat

Last Answer : Ans. 3 m

Most commonly used method for selection from segregation generations of crosses in self pollinated crops

Description : Most commonly used method for selection from segregation generations of crosses in self pollinated crops

Last Answer : Ans. Pedigree method

Breeding refers to selection procedure in which the segregating population of self pollinated species is grown without selections

Description : Breeding refers to selection procedure in which the segregating population of self pollinated species is grown without selections

Last Answer : Ans. Bulk

A progeny of single homozygous, self pollinated crops

Description : A progeny of single homozygous, self pollinated crops

Last Answer : Ans. Pure line