Polyploidy level of testa and pollen mother cell of seed

Description : A cell at telophase stage is observed by a student in a plant brought from the field. He tells his teacher that this cell is not like other cells at telophase stage. There is no formation of ... cells. This would result in (a) somaclonal variation (b) polyteny (c) aneuploidy (d) polyploidy.

Last Answer : (d) polyploidy.

Anther or pollen culture technique is used to obtained

Description : Anther or pollen culture technique is used to obtained

Last Answer : Ans. Haploid plants

When pollen sterility is caused by cytoplasmic genes

Description : When pollen sterility is caused by cytoplasmic genes

Last Answer : Ans. Cytoplasmic Male Sterility (CMS)

A condition in which either pollen is absent or non functional in flowering plants.

Description : A condition in which either pollen is absent or non functional in flowering plants.

Last Answer : Ans. Male Sterility

Removal of the entire tassel (male inflorescence of maize) from the plant before pollen to initiate cross hybridization

Description : Removal of the entire tassel (male inflorescence of maize) from the plant before pollen to initiate cross hybridization

Last Answer : Ans. Detasseling

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 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

Male gametophyte of angiosperms is shed at (a) four celled pollen grain (b) three celled pollen grain (c) microspore mother cell (d) anther.

Description : Male gametophyte of angiosperms is shed at (a) four celled pollen grain (b) three celled pollen grain (c) microspore mother cell (d) anther.

Last Answer : b) three celled pollen grain

In grasses what happens in microspore mother cell for the formation of mature pollen grains? (a) One meiotic and two mitotic divisions (b) One meiotic and one mitotic divisions (c) One meiotic division (d) One mitotic division

Description : In grasses what happens in microspore mother cell for the formation of mature pollen grains? (a) One meiotic and two mitotic divisions (b) One meiotic and one mitotic divisions (c) One meiotic division (d) One mitotic division

Last Answer : (b) One meiotic and one mitotic divisions

Which one of the following is surrounded by a callose wall? (a) Male gamete (b) Egg (c) Pollen grain (d) Microspore mother cell

Description : Which one of the following is surrounded by a callose wall? (a) Male gamete (b) Egg (c) Pollen grain (d) Microspore mother cell

Last Answer : (d) Microspore mother cell

Difference between integument and testa? -Biology

Description : Difference between integument and testa? -Biology

Last Answer : answer:

What is testa in plants? -Biology

Description : What is testa in plants? -Biology

Last Answer : answer:

The fruit is chambered, developed from inferior ovary and has seeds with succulent testa in (a) guava (b) cucumber (c) pomegranate (d) orange.

Description : The fruit is chambered, developed from inferior ovary and has seeds with succulent testa in (a) guava (b) cucumber (c) pomegranate (d) orange.

Last Answer : (c) pomegranate

Cotyledons and testa respectively are edible parts in (a) walnut and tamarind (b) french bean and coconut (c) cashew nut and litchi (d) groundnut and pomegranate.

Description : Cotyledons and testa respectively are edible parts in (a) walnut and tamarind (b) french bean and coconut (c) cashew nut and litchi (d) groundnut and pomegranate.

Last Answer : (d) groundnut and pomegranate.

$ Modern wheat is hexaploid. ! Polyploidy leads to the formation of new varieties.

Description : $ Modern wheat is hexaploid. ! Polyploidy leads to the formation of new varieties.

Last Answer : $ Modern wheat is hexaploid. ! Polyploidy leads to the formation of new varieties. A. If both As and R ... is wrong D. If both As and R are wrong.

Polyploidy arises due to change in the (1) number of chromatids (2) structure of genes (3) number of chromosomes (4) structure of chromosomes

Description : Polyploidy arises due to change in the (1) number of chromatids (2) structure of genes (3) number of chromosomes (4) structure of chromosomes

Last Answer : (3) number of chromosomes Explanation: An organism having more than two sets of homologous chromosomes is known as polyploid and the phenomenon polyploidy. Polyploidy refers to a numerical change in ... due to abnormal cell division, either during mitosis, or commonly during metaphase I in meiosis.

What is meant by polyploidy?

Description : What is meant by polyploidy?

Last Answer : The technique of developing polyploids is called polyploidy.

Polyploidy variety of Mango A) Vellaicollamban B) Olour C) Kurukkan D) All of the above

Description : Polyploidy variety of Mango A) Vellaicollamban B) Olour C) Kurukkan D) All of the above

Last Answer : D) All of the above

Polyploidy arises due to change in the (1) number of chromatids (2) structure of genes (3) number of chromosomes (4) structure of chromosomes

Description : Polyploidy arises due to change in the (1) number of chromatids (2) structure of genes (3) number of chromosomes (4) structure of chromosomes

Last Answer : number of chromosomes

$ 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.

In an angiosperm, how many microspore mother cells are required to produce 100 pollen grains? (a) 75 (b) 100 (c) 25 (d) 50

Description : In an angiosperm, how many microspore mother cells are required to produce 100 pollen grains? (a) 75 (b) 100 (c) 25 (d) 50

Last Answer : (c) 25

Why are pollen tubes necessary for seed plants? -Biology

Description : Why are pollen tubes necessary for seed plants? -Biology

Last Answer : answer:

Why are pollen tubes necessary for seed plants? -Biology

Description : Why are pollen tubes necessary for seed plants? -Biology

Last Answer : answer:

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

Description : 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 ... 1 and 3 (b) 1, 2 and 4 (c) Only 2 (d) 1, 2, 3 and 4

Last Answer : Ans:(c)

Metaxenia is the impact of a. Pollen on seed b. Pollen on fruit c. Pollen on ovule d. Pollen on ovary

Description : Metaxenia is the impact of a. Pollen on seed b. Pollen on fruit c. Pollen on ovule d. Pollen on ovary

Last Answer : Pollen on ovule

What is the function of germ pore? (a) Emergence of radicle (b) Absorption of water for seed germination (c) Initiation of pollen tube (d) Release of male gametes

Description : What is the function of germ pore? (a) Emergence of radicle (b) Absorption of water for seed germination (c) Initiation of pollen tube (d) Release of male gametes

Last Answer : (c) Initiation of pollen tube

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).

3What is the function of germ pore?a)Initiation of pollen tubeb)Release of male gametesc)Emergence of radicled)Absorption of water for seed germination

Description : 3What is the function of germ pore?a)Initiation of pollen tubeb)Release of male gametesc)Emergence of radicled)Absorption of water for seed germination

Last Answer : a)Initiation of pollen tube

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

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

Last Answer : ANSWER: C -- ENDOSPERM

Per hectare of seed rate of marigold

Description : Per hectare of seed rate of marigold

Last Answer : Ans. 1.2-1.5 kg/ha

Seed rate of knol khol is

Description : Seed rate of knol khol is

Last Answer : Ans. 1-1.5 kg/ha

Seed rate of cauliflower is

Description : Seed rate of cauliflower is