Which of the following statements is not correct? (a) Pollen germination and pollen tube growth are regulated by chemical components of pollen interacting with those of the pistil. (b) Some reptiles have also been reported as pollinators in some plant species. (c) Pollen grains of many species can germinate on the stigma of a flower, but only one pollen tube of the same species grows into the style. (d) Insects that consume pollen or nectar without bringing about pollination are called pollen/ nectar robbers.

Which of the following statements is not correct?
(a) Pollen germination and pollen tube growth are
regulated by chemical components of pollen
interacting with those of the pistil.
(b) Some reptiles have also been reported as
pollinators in some plant species.
(c) Pollen grains of many species can germinate on
the stigma of a flower, but only one pollen tube
of the same species grows into the style.
(d) Insects that consume pollen or nectar without
bringing about pollination are called pollen/
nectar robbers.
by

1 Answer

Answer :

(c) Pollen grains of many species can germinate on
the stigma of a flower, but only one pollen tube
of the same species grows into the style.
by

Related questions

Which of the following are the important floral rewards to the animal pollinators ? (a) Floral fragrance and calcium crystals (b) Protein pellicle and stigmatic exudates (c) Colour and large size of flower (d) Nectar and pollen grains

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Last Answer : (d) Nectar and pollen grains

The floral part that receives pollen grains during pollination is - (1 ovary (2) style (3) stigma (4) ovules

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Last Answer : (3) stigma Explanation: The stigma is the receptive tip of a carpel, or of several fused carpels, in the gynoecium of a flower. The stigma receives pollen at pollination and it is on the stigma that the pollen grain germinates. The style connects the stigma to the ovary.

The floral part that receives pollen-grains during pollination is (1) ovary (2) style (3) stigma (4) ovules

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Last Answer : stigma

Consider the following statements about pollination. 1. Transfer of pollen grains from the anther to ovules in the same flower or a different f lower is called pollination. 2. The pollination by wind is called anemophily. 3. Pollination is a prerequisite for seed and fruit development in all flowering plants. 4. Seeds may develop in some water ferns without pollination. Which of the above statement/s is/are correct? (a) 1 and 3 (b) 1, 2 and 4 (c) Only 2 (d) 1, 2, 3 and 4

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Last Answer : (d) guide the entry of pollen tube.

Transfer of pollen grains from the anther to the stigma of another flower of the same plant is called (a) xenogamy (b) geitonogamy (c) karyogamy (d) autogamy.

Description : Transfer of pollen grains from the anther to the stigma of another flower of the same plant is called (a) xenogamy (b) geitonogamy (c) karyogamy (d) autogamy.

Last Answer : (b) geitonogamy

Transfer of pollen grains from the anther to the stigma of another flower of the same plant is called:a) Autogamyb) Xenogamyc) Geitonogamyd) Karyogamy

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The transfer of pollen grains from anther to stigma is called; a) Fertilization b) pollination c) Microsporogenesis d) Polyembryony

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When pollen of a flower is transferred to the stigma of another flower of the same plant, the pollination is referred to as (a) autogamy (b) geitonogamy (c) xenogamy (d) allogamy.

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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.

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Wind pollinated flowers are (a) small, brightly coloured, producing large number of pollen grains (b) small, producing large number of dry pollen grains (c) large producing abundant nectar and pollen (d) small, producing nectar and dry pollen

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

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The transfer of pollen grains from the an- ther to the stigma is called?

Description : The transfer of pollen grains from the an- ther to the stigma is called?

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Description : When pollen grains are transferred to the stigma? -Biology

Last Answer : answer:

When pollen grains are transferred to the stigma? -Biology

Description : When pollen grains are transferred to the stigma? -Biology

Last Answer : answer:

In flowers the terminal part of a stamen, containing the pollen sacs is known as the: a) anther b) style c) filament d) pistil

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Last Answer : ANSWER: A -- Anther

Which of the following nourishes a developing seed? a) pollen tube b) nectar c) endosperm d) zygote

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Last Answer : ANSWER: C -- ENDOSPERM

Which of the following nutrient is involved in reproduction in plants and germination of pollen grains ? a. Boron b. Calcium c. Potassium d. Sulphur

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What happens after pollen lands on the stigma of a flower?

Description : What happens after pollen lands on the stigma of a flower?

Last Answer : Feel Free to Answer

Anthesis is a phenomenon which refers to (a) reception of pollen by stigma (b) formation of pollen (c) development of anther (d) opening of flower bud.

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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.

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

The pollen grains of flowers pollinated by insects are : (1) smooth and dry (2) rough and sticky (3) rough and dry (4) large and, showy

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

Last Answer : Ans. Cross pollination/Allogamy

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Last Answer : Ans:(a)

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Description : Factors which stimulate pollen tube germination. -Biology

Last Answer : answer:

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$ Pollination with the help of a pollen tube is called porogamy. ! Pollination occurs before meiosis of pollen mother cells.

Description : $ Pollination with the help of a pollen tube is called porogamy. ! Pollination occurs before meiosis of pollen mother cells.

Last Answer : $ Pollination with the help of a pollen tube is called porogamy. ! Pollination occurs before meiosis of ... wrong D. If both As and R are wrong.

What scientific name is given to the central organ of the flower, typically consisting of a style, stigma, and ovary?

Description : What scientific name is given to the central organ of the flower, typically consisting of a style, stigma, and ovary?  

Last Answer : ANSWER: PISTIL

The stamens are the male organs of flower which are also called a. Pistil b. Gynoecium c. Androecium d. Carpel

Description : The stamens are the male organs of flower which are also called a. Pistil b. Gynoecium c. Androecium d. Carpel

Last Answer : Androecium

In tissue culture medium, the embryoids formed from pollen grains is due to (a) cellular totipotency (b) organogenesis (c) double fertilization (d) test tube culture.

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Failure of a viable pollen to grow down the style of the flower of the same variety is called ___________: a. Self sterility b. Self incompatibility c. Self unfruitfulness d. Sterility

Description : Failure of a viable pollen to grow down the style of the flower of the same variety is called ___________: a. Self sterility b. Self incompatibility c. Self unfruitfulness d. Sterility

Last Answer : Self incompatibility

Function of filiform apparatus is toa)Guide the entry of pollen tubeb)Recognize the suitable pollen at stigmac)Stimulate division of generative celld)Produce nectar

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Last Answer : )Guide the entry of pollen tube

Significance of pollen pistil interaction? -Biology

Description : Significance of pollen pistil interaction? -Biology

Last Answer : answer:

Significance of pollen pistil interaction? -Biology

Description : Significance of pollen pistil interaction? -Biology

Last Answer : answer:

What waves utilize insects to locate nectar?

Description : What waves utilize insects to locate nectar?

Last Answer : ultraviolet

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Description : How do flower pollinators occur ?

Last Answer : Two ways. 1. Self-pollination. 2. After pollination.

What parts of a flower attract pollinators?

Description : What parts of a flower attract pollinators?

Last Answer : petals

Formation of 8-nucleate embryosac by pollen grains is also called as

Description : Formation of 8-nucleate embryosac by pollen grains is also called as

Last Answer : Formation of 8-nucleate embryosac by pollen grains is also called as – Nemec phenomenon 

Which one of the following statements is wrong? (a) When pollen is shed at two-celled stage, double fertilisation does not take place. (b) Vegetative cell is larger than generative cell. (c) Pollen grains in some plants remain viable for months. (d) Intine is made up of cellulose and pectin.

Description : Which one of the following statements is wrong? (a) When pollen is shed at two-celled stage, double fertilisation does not take place. (b) Vegetative cell is larger than generative cell. (c) Pollen grains in some plants remain viable for months. (d) Intine is made up of cellulose and pectin.

Last Answer : (a) When pollen is shed at two-celled stage, double fertilisation does not take place.

Which one of the following statements is not true? (a) The flowers pollinated by flies and bats secrete foul odour to attract them. (b) Honey is made by bees by digesting pollen collected from flowers. (c) Pollen grains are rich in nutrients and they are used in the form of tablets and syrups. (d) Pollen grains of some plants cause severe allergies and bronchial afflictions in some people.

Description : Which one of the following statements is not true? (a) The flowers pollinated by flies and bats secrete foul odour to attract them. (b) Honey is made by bees by digesting pollen collected ... . (d) Pollen grains of some plants cause severe allergies and bronchial afflictions in some people.

Last Answer : (b) Honey is made by bees by digesting pollen collected from flowers.

Which one of the following statements is wrong?a)Pollen grains in some plants remain viable for monthsb)Intine is made up of cellulose and pectinc)When pollen is shed at two-celled state, double fertilization does not take placed)Vegetative cell is larger than generative cell

Description : Which one of the following statements is wrong?a)Pollen grains in some plants remain viable for monthsb)Intine is made up of cellulose and pectinc)When pollen is shed at two-celled state, double fertilization does not take placed)Vegetative cell is larger than generative cell

Last Answer : c)When pollen is shed at two-celled state, double fertilization does not take place

The plant parts which consist of two generations- one within the other (1) pollen grains inside the anther (2) germinated pollen grain with two male gametes (3) seed inside the fruit (4) embryo sac inside the ovule (a) (1) only (b) (1), (2), and (3) (c) (3) and (4)

Description : The plant parts which consist of two generations- one within the other (1) pollen grains inside the anther (2) germinated pollen grain with two male gametes (3) seed inside the fruit (4) embryo sac inside the ovule (a) (1) only (b) (1), (2), and (3) (c) (3) and (4)

Last Answer : (d) (1) and (4).

Match the following and select the correct option. A. Earthworm (i) Pioneer species B. Succession (ii) Detritivore C. Ecosystem service (iii)Natality D. Population growth (iv) Pollination A B C D (a) (i) (ii) (iii) (iv) (b) (iv) (i) (iii) (ii) (c) (iii) (ii) (iv) (i) (d) (ii) (i) (iv) (iii)

Description : Match the following and select the correct option. A. Earthworm (i) Pioneer species B. Succession (ii) Detritivore C. Ecosystem service (iii)Natality D. Population growth (iv) Pollination A B C D (a) (i) (ii) (iii) (iv) (b) (iv) (i) (iii) (ii) (c) (iii) (ii) (iv) (i) (d) (ii) (i) (iv) (iii)

Last Answer : (d) (ii) (i) (iv) (iii)