In angiosperms regarding development of microgametophyte each microspore mother cell undergoes (a) Mitosis to produce 4 microspores (b) Two successive mitosis to form 4 microspores (c) Two successive meiotic division to form 4 microspores (d) Meiosis to produce 4 haploid microspores

In angiosperms regarding development of microgametophyte each microspore mother cell undergoes (a) Mitosis to produce 4 microspores (b) Two successive mitosis to form 4 microspores (c) Two successive meiotic division to form 4 microspores (d) Meiosis to produce 4 haploid microspores
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Description : Male gametes in angiosperms are formed by the division of (a) generative cell (b) vegetative cell (c) microspore mother cell (d) microspore.

Last Answer : (a) generative cell

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

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During microsporogenesis, successive type of cell division is found in

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Last Answer : During microsporogenesis, successive type of cell division is found in – Monocots

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Description : Unlike mitosis, meiosis results in the formation of a. diploid cells. b. haploid cells. c. 2N daughter cells. d. body cells.

Last Answer : b. haploid cells.

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Description : When a diploid embryosac is formed from a megaspore mother cell without meiosis, it is called as

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Last Answer : Ans. ((d))

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Last Answer : Both

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Which one of the following statements is correct?a)Endothecium produces the microspores b)Tapetum nourishes the developing pollenc)Hard outer layer of pollen is called intined)Sporogenous tissue is haploid

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4.A mature embryosac in angiosperm is formed from a megaspore mother cell by ------- cell divisions. (a) one mitosis and two meiosis, b)two mitosis and one meiosis, c)three mitosis and two meiosis d)three mitosis and one meiosis)

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Last Answer : d) meiotic division.

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Last Answer : (c) microspore

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Last Answer : (d) microsporocytes.

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

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When the embryo develops from haploid egg cell without fertilization, the phenomenon is called as

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In a cell haploid chromosome number is 15. What number is found in Pollen grain, Zygote, Primary endosperm nucleus and Colchicine treated zygote.

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Last Answer : (c) reduction division occurs in the megaspore mother cells

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Description : Is two division meiosis or mitosis?

Last Answer : mitosis

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Description : (i) Mention the event that induces the completion of the meiotic division of the secondary oocyte. (ii) Trace the journey of the ovum from the ovary, its fertilisation and further development until the implantation of the embryo. -Biology

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A plant having two types of haploid structures in its life cycle is known as: (a) Haplobiontic (b) Diplobiontic (c) Haplontic (d) Diplontic

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Last Answer : Ans. ((c))

Endosperm in gymnosperm is............. a) haploid b)diploid c)triploid d)tetraploid

Description : Endosperm in gymnosperm is............. a) haploid b)diploid c)triploid d)tetraploid

Last Answer : a) haploid

To obtain haploid plants, we culture _________ e. Entire anther f. Nucleus g. Embryo h. Apical bud

Description : To obtain haploid plants, we culture _________ e. Entire anther f. Nucleus g. Embryo h. Apical bud

Last Answer : e. Entire anther

What is a microspore mother cell? -Biology

Description : What is a microspore mother cell? -Biology

Last Answer : answer:

Where is the microspore mother cell located? -Biology

Description : Where is the microspore mother cell located? -Biology

Last Answer : answer:

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

Sporocarp is a reproductive structure of (a) Some algae (b) Some aquatic ferns (c) Angiosperms having spores (d) Bryophytes

Description : Sporocarp is a reproductive structure of (a) Some algae (b) Some aquatic ferns (c) Angiosperms having spores (d) Bryophytes

Last Answer : Ans. ((b))

Double fertilization is found in: (a) Bryophytes (b) Angiosperms (c) Gymnosperms (d) Pteridophytes

Description : Double fertilization is found in: (a) Bryophytes (b) Angiosperms (c) Gymnosperms (d) Pteridophytes

Last Answer : Ans. ((b))

How do angiosperms differ from gymnosperms?

Description : How do angiosperms differ from gymnosperms?

Last Answer : First, the seeds of the angiosperms, a more recently evolved and highly successful division of the tracheophytes, are enclosed within a protective chamber, the ovary. A ripened ovary containing ... support. In conifers, the single xylem elements, the tracheids, represent a more primitive condition 

The fused bracts in the male flowers of Gnetum are comparable to ....... a) leaves of angiosperms b) bracteoles of angiosperms c) bracts of angiosperms d) perianth of angiosperms

Description : The fused bracts in the male flowers of Gnetum are comparable to ....... a) leaves of angiosperms b) bracteoles of angiosperms c) bracts of angiosperms d) perianth of angiosperms

Last Answer : b) bracteoles of angiosperms

Double fertilization in Angiosperms was discovered by

Description : Double fertilization in Angiosperms was discovered by 

Last Answer : Double fertilization in Angiosperms was discovered by – Nawaschin

In Angiosperms, during pollination, the pollen grains are mostly

Description : In Angiosperms, during pollination, the pollen grains are mostly

Last Answer : In Angiosperms, during pollination, the pollen grains are mostly – Bicellular

The most common type of embryosac in Angiosperms is

Description : The most common type of embryosac in Angiosperms is

Last Answer : The most common type of embryosac in Angiosperms is – Polygonum type

The porous wood of angiosperms is called as

Description : The porous wood of angiosperms is called as

Last Answer : The porous wood of angiosperms is called as – Hard wood 

Pollen grains of angiosperms are

Description : Pollen grains of angiosperms are

Last Answer : Pollen grains of angiosperms are – Partially developed male gametophyte

Male gametophyte in angiosperms consists of

Description : Male gametophyte in angiosperms consists of

Last Answer : Male gametophyte in angiosperms consists of – Pollen grains, pollen tube, tube nucleus and two male nuclei.

The Apical shoot meristem of Angiosperms consists of

Description : The Apical shoot meristem of Angiosperms consists of

Last Answer : The Apical shoot meristem of Angiosperms consists of – Tunica, Carpus and leaf primordium

Describe double fertilization in angiosperms.

Description : Describe double fertilization in angiosperms.

Last Answer : Ans: Occurrence of two types of fertilizations in the same embryosac is called as double fertilization. It was discovered by Nawaschin in Fritillaria and Lilium. It is a feature of angiosperms. ... . It was discovered by Nawaschin in Fritillaria and Lilium. PEN develops into endosperm. 

Successive type of microsporogenesis is found in

Description : Successive type of microsporogenesis is found in

Last Answer : Successive type of microsporogenesis is found in – Monocots

Each secondary spermatocyte after second meiotic division produces

Description : Each secondary spermatocyte after second meiotic division produces

Last Answer : Each secondary spermatocyte after second meiotic division produces A. Four haploid spermatids B. ... haploid spermatids D. Two diploid spermatids.

Which of the following statements is not true about somatic embryogenesis? (a) The pattern of development of a somatic embryo is comparable to that of a zygotic embryo. (b) Somatic embryos can develop from microspores. (c) Somatic embryo is induced usually by an auxin such as 2, 4-D. (d) A somatic embryo develops from a somatic cell.

Description : Which of the following statements is not true about somatic embryogenesis? (a) The pattern of development of a somatic embryo is comparable to that of a zygotic embryo. (b) Somatic embryos can develop from ... an auxin such as 2, 4-D. (d) A somatic embryo develops from a somatic cell.

Last Answer : (b) Somatic embryos can develop from microspores.

How many offspring cells are formed from three mother cells in mitosis division ?

Description : How many offspring cells are formed from three mother cells in mitosis division ?

Last Answer : In mitosis division, 3 offspring cells are formed from three mother cells.