In angiosperm, all the four microspores of tetrad are covered by a layer which is formed by (a) pectocellulose (b) callose (c) cellulose (d) sporopollenin

In angiosperm, all the four microspores of tetrad are
covered by a layer which is formed by
(a) pectocellulose (b) callose
(c) cellulose (d) sporopollenin
by

1 Answer

Answer :

(a) pectocellulose
by

Related questions

Exine layer of pollen grain is made up of : a) sporopollenin b)Pectin c) cellulose d)chitin

Description : Exine layer of pollen grain is made up of : a) sporopollenin b)Pectin c) cellulose d)chitin

Last Answer : Ans: a)sporopollenin

An organic substance that can withstand environmental extremes and cannot be degraded by any enzyme is (a) cuticle (b) sporopollenin (c) lignin (d) cellulose.

Description : An organic substance that can withstand environmental extremes and cannot be degraded by any enzyme is (a) cuticle (b) sporopollenin (c) lignin (d) cellulose.

Last Answer : (b) sporopollenin

55. An organic substance that can withstand environmental extremes and cannot be degraded by any enzyme is (1) Cellulose (2) Cuticle (3) Sporopollenin (4) Lignin

Description : 55. An organic substance that can withstand environmental extremes and cannot be degraded by any enzyme is (1) Cellulose (2) Cuticle (3) Sporopollenin (4) Lignin

Last Answer : Lignin

Which one of the following statements is correct? (a) Endothecium produces the microspores. (b) Tapetum nourishes the developing pollen. (c) Hard outer layer of pollen is called intine. (d) Sporogenous tissue is haploid

Description : Which one of the following statements is correct? (a) Endothecium produces the microspores. (b) Tapetum nourishes the developing pollen. (c) Hard outer layer of pollen is called intine. (d) Sporogenous tissue is haploid

Last Answer : (b) Tapetum nourishes the developing pollen.

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

Description : 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

Last Answer : Tapetum nourishes the developing pollen

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

Cytoskeleton is made up of (a) callose deposits (b) cellulosic microfibrils (c) proteinaceous filaments (d) calcium carbonate granules.

Description : Cytoskeleton is made up of (a) callose deposits (b) cellulosic microfibrils (c) proteinaceous filaments (d) calcium carbonate granules.

Last Answer : (c) proteinaceous filaments

What is a tetrad in cell division? -Biology

Description : What is a tetrad in cell division? -Biology

Last Answer : answer:

What is bivalent or tetrad? -Biology

Description : What is bivalent or tetrad? -Biology

Last Answer : answer:

What is a packet of 8 cocci called? a. diplococcus b. tetrad c. sarcina d. Staphylococcus

Description : What is a packet of 8 cocci called? a. diplococcus b. tetrad c. sarcina d. Staphylococcus

Last Answer : c. sarcina

Spherical bacterial cells in chains would be a referred to as a _______ arrangement. a. Vibrio b. Streptococcus c. Staphylococcus d. Tetrad

Description : Spherical bacterial cells in chains would be a referred to as a _______ arrangement. a. Vibrio b. Streptococcus c. Staphylococcus d. Tetrad

Last Answer : b. Streptococcus

Photographic plates are covered with black paper because (a) the cellulose acetate of the paper must remain fresh (b) sunlight is easily absorbed by black paper and it helps develop the film (c) the silver bromide present on the plate is very sensitive to light and black paper prevents contact with light (d) the conversion of silver bromide to metallic silver is essential

Description : Photographic plates are covered with black paper because (a) the cellulose acetate of the paper must remain fresh (b) sunlight is easily absorbed by black paper and it helps develop the film ... paper prevents contact with light (d) the conversion of silver bromide to metallic silver is essential

Last Answer : Ans:(c)

Which of the following statements is correct? (a) Sporopollenin can be degraded by enzymes. (b) Sporopollenin is made up of inorganic materials. (c) Sporopollenin can withstand high temperatures as well as strong acids and alkalis. (d) Sporopollenin can withstand high temperatures but not strong acids.

Description : Which of the following statements is correct? (a) Sporopollenin can be degraded by enzymes. (b) Sporopollenin is made up of inorganic materials. (c) Sporopollenin can withstand high temperatures ... strong acids and alkalis. (d) Sporopollenin can withstand high temperatures but not strong acids.

Last Answer : (c) Sporopollenin can withstand high temperatures as well as strong acids and alkalis

Which one of the following statements is not true? (a) Pollen grains of many species cause severe allergies. (b) Stored pollen in liquid nitrogen can be used in the crop breeding programmes. (c) Tapetum helps in the dehiscence of anther. (d) Exine of pollen grains is made up of sporopollenin.

Description : Which one of the following statements is not true? (a) Pollen grains of many species cause severe allergies. (b) Stored pollen in liquid nitrogen can be used in the crop breeding programmes. (c) Tapetum helps in the dehiscence of anther. (d) Exine of pollen grains is made up of sporopollenin.

Last Answer : (c) Tapetum helps in the dehiscence of anther.

Which of the following has proved helpful in preserving pollen as fossils? (a) Pollenkitt (b) Cellulosic intine (c) Oil content (d) Sporopollenin

Description : Which of the following has proved helpful in preserving pollen as fossils? (a) Pollenkitt (b) Cellulosic intine (c) Oil content (d) Sporopollenin

Last Answer : (d) Sporopollenin

Which of the following has proved helpful in preserving pollen as fossils ? (1) Pollenkitt (2) Cellulosic intine (3) Oil content (4) Sporopollenin

Description : Which of the following has proved helpful in preserving pollen as fossils ? (1) Pollenkitt (2) Cellulosic intine (3) Oil content (4) Sporopollenin

Last Answer : (4) Sporopollenin

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)

Description : 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)

Last Answer : d)three mitosis and one meiosis)

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

Description : 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

Last Answer : Ans. ((d))

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.

Meiosis is best observed in dividing (a) cells of apical meristem (b) cells of lateral meristem (c) microspores and anther wall (d) microsporocytes.

Description : Meiosis is best observed in dividing (a) cells of apical meristem (b) cells of lateral meristem (c) microspores and anther wall (d) microsporocytes.

Last Answer : (d) microsporocytes.

21. Asexual microscopic motile reproductive structures are called ... b) Microspores b) Zoospores c) Conidiospores d) Aplanospores

Description : 21. Asexual microscopic motile reproductive structures are called ... b) Microspores b) Zoospores c) Conidiospores d) Aplanospores

Last Answer : d) Aplanospores

1. Asexual microscopic motile reproductive structures are called ... a) Microspores b) Zoospores c) Conidiospores d) Aplanospores

Description : 1. Asexual microscopic motile reproductive structures are called ... a) Microspores b) Zoospores c) Conidiospores d) Aplanospores

Last Answer : d) Aplanospores

How many meiotic divisions are required to produce 200 microspores from functional microspore mother cell

Description : 1. How many meiotic divisions are required to produce 200 microspores from functional microspore mother cell ? a) 400 b) 50 c) 200 d) 100

Last Answer : b) 50

$ Cell wall of plants is formed of fungal cellulose. ! Smooth endoplasmic reticulum has ribosomes on its flagellin.

Description : $ Cell wall of plants is formed of fungal cellulose. ! Smooth endoplasmic reticulum has ribosomes on its flagellin.

Last Answer : $ Cell wall of plants is formed of fungal cellulose. ! Smooth endoplasmic reticulum has ribosomes on its ... wrong D. If both As and R are wrong.

Which of the following natural bio polymers are formed as a result of polymerisation of amino-acids? (A) Starch (B) Cellulose (C) Proteins (D) Nucleic acids

Description : Which of the following natural bio polymers are formed as a result of polymerisation of amino-acids? (A) Starch (B) Cellulose (C) Proteins (D) Nucleic acids

Last Answer : (C) Proteins

The inner layer of gizzard of cockroach is covered by :

Description : The inner layer of gizzard of cockroach is covered by :

Last Answer : The inner layer of gizzard of cockroach is covered by : A. By cuticle B. By mucous membrane C. By endoepithelium D. By peritrophic membrane

Is it true that the earths surface is covered by a continuous layer of soild rock?

Description : Is it true that the earths surface is covered by a continuous layer of soild rock?

Last Answer : s it true that the earths surface is covered by a continuouslayer of solid rock?

What layer of the Earth's crust that is not covered by ocean water is called the?

Description : What layer of the Earth's crust that is not covered by ocean water is called the?

Last Answer : continental crust

At high pressure, the entire metal surface gets covered by a mono molecular layer of the gas. What is the order of the process ?

Description : At high pressure, the entire metal surface gets covered by a mono molecular layer of the gas. What is the order of the process ?

Last Answer : Ans. Zero order. 

What layers are covered under end to end layer connectivity? Explain briefly the function of each one of them.

Description : What layers are covered under end to end layer connectivity? Explain briefly the function of each one of them.

Last Answer : The layers 4-7 of ISO-OSI reference model communicate with peer entities in the end systems. There is no communication with entities in the intermediate systems. In this sense, layers 4-7 are often ... 6. Editors and terminal support services 7. Telematic services like videotext. 

Life cycle of Angiosperm plant? -Biology

Description : Life cycle of Angiosperm plant? -Biology

Last Answer : answer:

How many polar nuclei are in the ovule of the angiosperm? -Biology

Description : How many polar nuclei are in the ovule of the angiosperm? -Biology

Last Answer : answer:

Life cycle of Angiosperm plant? -Biology

Description : Life cycle of Angiosperm plant? -Biology

Last Answer : answer:

How many polar nuclei are in the ovule of the angiosperm? -Biology

Description : How many polar nuclei are in the ovule of the angiosperm? -Biology

Last Answer : answer:

Angiosperm show ............. type of adaptation -Biology

Description : Angiosperm show ............. type of adaptation -Biology

Last Answer : answer:

Angiosperm show ............. type of adaptation -Biology

Description : Angiosperm show ............. type of adaptation -Biology

Last Answer : answer:

What is artificial system of angiosperm classification? -Biology

Description : What is artificial system of angiosperm classification? -Biology

Last Answer : answer:

What is natural system of angiosperm classification? -Biology

Description : What is natural system of angiosperm classification? -Biology

Last Answer : answer:

What is artificial system of angiosperm classification? -Biology

Description : What is artificial system of angiosperm classification? -Biology

Last Answer : answer:

What is natural system of angiosperm classification? -Biology

Description : What is natural system of angiosperm classification? -Biology

Last Answer : answer:

What is angiosperm or angiosperm ?

Description : What is angiosperm or angiosperm ?

Last Answer : Plants that produce flowers , fruits and seeds and fruit seeds are covered with a specific coating are called angiosperms. The main plant in the diverse flora is the angiosperms. The number of living ... Cretaceous about 60 million years ago, they are still dominant in a wide area of the world.

Is a tomato an angiosperm or gymsperm?

Description : Is a tomato an angiosperm or gymsperm?

Last Answer : Need answer

Is larch an angiosperm or gymnosperm?

Description : Is larch an angiosperm or gymnosperm?

Last Answer : Need answer

Is a coconut a angiosperm or a gymnosperm?

Description : Is a coconut a angiosperm or a gymnosperm?

Last Answer : it is a gymnosperm

Is papaya a gymnosperm or angiosperm?

Description : Is papaya a gymnosperm or angiosperm?

Last Answer : Angiosperm

Is a tulip a angiosperm or a gymnosperm?

Description : Is a tulip a angiosperm or a gymnosperm?

Last Answer : Angiosperm

What are the Characteristic of angiosperm?

Description : What are the Characteristic of angiosperm?

Last Answer : The word Angio in Greek means covered and spermmeans seeds.ovules are enclosed within other tissues at the time of pollinationseeds develop inside the flowerovary matures into a fruitAngiosperms have two sub-divisions: Monocotyledonous plants and Dicotyledonous plants

Is banana plants gymnosperm or angiosperm?

Description : Is banana plants gymnosperm or angiosperm?

Last Answer : The question you have to answer is the seed contained in a fruit. Although you almost never see them, the banana does contain seeds (though non-fertile). So Angiosperm is the answer.One curiosity of ... ! For K40 decays to Ar40 with the emission of a radiation particle. But continue to enjoy them!

What are the Characteristic of angiosperm?

Description : What are the Characteristic of angiosperm?

Last Answer : The word Angio in Greek means covered and spermmeans seeds.ovules are enclosed within other tissues at the time of pollinationseeds develop inside the flowerovary matures into a fruitAngiosperms have two sub-divisions: Monocotyledonous plants and Dicotyledonous plants

Is banana plants gymnosperm or angiosperm?

Description : Is banana plants gymnosperm or angiosperm?

Last Answer : The question you have to answer is the seed contained in a fruit. Although you almost never see them, the banana does contain seeds (though non-fertile). So Angiosperm is the answer.One curiosity of ... ! For K40 decays to Ar40 with the emission of a radiation particle. But continue to enjoy them!