Haploid plants can be obtained from: (a) Leaf culture (b) Bud culture (c) Root culture (d) Anther culture

Haploid plants can be obtained from: (a) Leaf culture (b) Bud culture (c) Root culture (d) Anther culture
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Ans. ((d))
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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

When anther and stigma mature at different time, this phenomenon is called as

Description : When anther and stigma mature at different time, this phenomenon is called as

Last Answer : When anther and stigma mature at different time, this phenomenon is called as – Dichogamy

Describe the structure of anther with the help of a neat diagram

Description : Describe the structure of anther with the help of a neat diagram 

Last Answer : Ans: Structure of anther is clearly understood in the transverse section of anther. In the T.S. of a dithecous anther the two thecae are joined by connective consisting of sterile ... later separate from each other and liberated individually. Individual microspores are called as pollen grains. 

Best material for the study of mitosis in laboratory is (a) anther (b) root tip (c) leaf tip (d) ovary

Description : Best material for the study of mitosis in laboratory is (a) anther (b) root tip (c) leaf tip (d) ovary

Last Answer : b) root tip

Anther or pollen culture technique is used to obtained

Description : Anther or pollen culture technique is used to obtained

Last Answer : Ans. Haploid plants

In the secondary culture, cells are obtained from a. primary culture b. the organism c. organ culture d. phenotypic culture

Description : In the secondary culture, cells are obtained from a. primary culture b. the organism c. organ culture d. phenotypic culture

Last Answer : a. primary culture

A viruses free plant can be obtained from — propagation. a. Leaf b. Stem c. Root d. Meristem culture

Description : A viruses free plant can be obtained from — propagation. a. Leaf b. Stem c. Root d. Meristem culture

Last Answer : d. Meristem culture

Haploid cells belong to: (a) Integument, pollen grain, endosperm (b) Embryo, endosperm and pollen grain (c) Megaspore, pollen grain, antipodal (d) Integument, pollen grain and antipodal

Description : Haploid cells belong to: (a) Integument, pollen grain, endosperm (b) Embryo, endosperm and pollen grain (c) Megaspore, pollen grain, antipodal (d) Integument, pollen grain and antipodal

Last Answer : Ans. ((c))

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

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

Last Answer : Ans. ((a))

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))

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

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

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

Last Answer : When the embryo develops from haploid egg cell without fertilization, the phenomenon is called as – Haploid parthenogenesis

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

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

Last Answer : Ans: 15 in pollen grain, 30 in zygote, 45 in Primary Endosperm nucleus and 60 in colchicine treated zygote.

n Pinus/gymnosperms, the haploid structure are (a) megaspore, endosperm and embryo (b) megaspore, pollen grain and endosperm (c) megaspore, integument and root (d) pollen grain, leaf and root.

Description : n Pinus/gymnosperms, the haploid structure are (a) megaspore, endosperm and embryo (b) megaspore, pollen grain and endosperm (c) megaspore, integument and root (d) pollen grain, leaf and root.

Last Answer : (b) megaspore, pollen grain and endosperm

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.

Description : 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.

Last Answer : (d) opening of flower bud.

In order to obtain virus-free plants through tissue culture the best method is (a) meristem culture (b) protoplast culture (c) embryo rescue (d) anther culture.

Description : In order to obtain virus-free plants through tissue culture the best method is (a) meristem culture (b) protoplast culture (c) embryo rescue (d) anther culture.

Last Answer : (a) meristem culture

Clove, the commonly used spice,is obtained from the - (1) root (2) stem (3) flower bud (4) fruit

Description : Clove, the commonly used spice,is obtained from the - (1) root (2) stem (3) flower bud (4) fruit

Last Answer : (3) flower bud Explanation: Cloves are the aromatic dried flower buds of a tree in the family Myrtaceae, Syzygum aromaticum. Cloves are native to the Maluku islands in Indonesia and used as a ... French clou and Spanish clavo, 'nail') as the buds vaguely resemble small irregular nails in shape.

From which part of the Omit is clove, the commonly used spice, obtained - (1) Fruit (2) Flower bud (3) Stern (4) Root

Description : From which part of the Omit is clove, the commonly used spice, obtained - (1) Fruit (2) Flower bud (3) Stern (4) Root

Last Answer : (2) Flower bud Explanation: Cloves are the aromatic dried flower buds of a tree in the family Myrtaceae, Syzygium aromaticum. The clove tree is an evergreen that grows to a height ranging from ... terminating in four spreading sepals, and four unopened petals which form a small ball in the centre.

Clove, the commonly-used spice, is obtained from the (1) Fruit (2) Stem (3) Root (4) Flower bud

Description : Clove, the commonly-used spice, is obtained from the (1) Fruit (2) Stem (3) Root (4) Flower bud

Last Answer : (4) Flower bud Explanation: Cloves are the aromatic dried flower buds of a tree in the family Myrtaceae. Cloves are native to the Maluku islands in Indonesia and used as a spice in cuisines ... ranging from 8- 12 ma, having large leaves and sanguine flowers in numerous groups of terminal clusters.

From which part of the plant is clove, the commonly used spice, obtained ? (1) Fruit (2) Flower bud (3) Stem (4) Root

Description : From which part of the plant is clove, the commonly used spice, obtained ? (1) Fruit (2) Flower bud (3) Stem (4) Root

Last Answer : Flower bud

Clove, the commonly used spice, is obtained from the : (1) root (2) stem (3) flower bud (4) fruit

Description : Clove, the commonly used spice, is obtained from the : (1) root (2) stem (3) flower bud (4) fruit

Last Answer : flower bud

How do plants absorb water through root hairs ?

Description : How do plants absorb water through root hairs ?

Last Answer : Answer : Plants absorb water through unicellular root hairs.

Mycorrhizae is associated with the following a) Formation of root nodules b) Hyphae penetrating the soil c) Found mostly in lower plants d) Soil erosion

Description : Mycorrhizae is associated with the following a) Formation of root nodules b) Hyphae penetrating the soil c) Found mostly in lower plants d) Soil erosion

Last Answer : a) Formation of root nodules

Root suckers are a) Insects that suck nutrients from the roots of plants b) Shoots that arise from roots to form new plant c)New plant parts that arise from the branches of fruit trees d) Roots of neighboring plants that share water with the another plant

Description : Root suckers are a) Insects that suck nutrients from the roots of plants b) Shoots that arise from roots to form new plant c)New plant parts that arise from the branches of fruit trees d) Roots of neighboring plants that share water with the another plant

Last Answer : b) Shoots that arise from roots to form new plant

Many plants have two leaves directly across from each other at each node, and a bud in the axil of each leaf. Name the term use in plant studies to describe this leaf arrangement.

Description : Many plants have two leaves directly across from each other at each node, and a bud in the axil of each leaf. Name the term use in plant studies to describe this leaf arrangement.

Last Answer : ANSWER: OPPOSITE

What is a thorn leaf ?

Description : What is a thorn leaf ?

Last Answer : : When a leaf is cut, it is called a thorn leaf. E.g .: lemon.

In angiosperm, triple fusion is necessary for the formation of: (a) Embryo (b) Pollen (c) Endosperm (d) Leaf

Description : In angiosperm, triple fusion is necessary for the formation of: (a) Embryo (b) Pollen (c) Endosperm (d) Leaf

Last Answer : Ans. ((c))

Water potential in leaf tissue is “positive” (near zero) during: (a) Low transpiration (b) Excessive absorption (c) Excessive transpiration (d) Gestation

Description : Water potential in leaf tissue is “positive” (near zero) during: (a) Low transpiration (b) Excessive absorption (c) Excessive transpiration (d) Gestation

Last Answer : Ans. ((d))

Abscission layer developed during leaf fall is made of: (a) Cork cells (b) Sclerenchymatous cells (c) Sclerenchymatous cells (d) Parenchymatous cells

Description : Abscission layer developed during leaf fall is made of: (a) Cork cells (b) Sclerenchymatous cells (c) Sclerenchymatous cells (d) Parenchymatous cells

Last Answer : Ans. ((d))

The specific characters of C4 plant is: (a) Bulliform cells (b) Kranz anatomy (c) Parallel venation (d) Isobilateral leaf

Description : The specific characters of C4 plant is: (a) Bulliform cells (b) Kranz anatomy (c) Parallel venation (d) Isobilateral leaf

Last Answer : Ans. ((b))

Stomata in bryophytes are present in the of: (a) Capsule (b) Leaf (c) Stem (d) Seta

Description : Stomata in bryophytes are present in the of: (a) Capsule (b) Leaf (c) Stem (d) Seta

Last Answer : Ans. ((a))

Which Pollutant causes leaf curling a) CO b) H2S c) O3 d) SO2

Description : Which Pollutant causes leaf curling a) CO b) H2S c) O3 d) SO2 

Last Answer : d) SO2

Culture spreads from one place to anther and such transmission is called as ________. A. difference. B. reputation. C. adoption. D. heritage.

Description : Culture spreads from one place to anther and such transmission is called as ________. A. difference. B. reputation. C. adoption. D. heritage.

Last Answer : A. difference.

Consider the following statement: The ex situ conservation of genetic resources can be done through: (1) Tissue culture practices (2) Maintenance of sanctuaries (3) The establishment of germplasm banks (4) The establishment of national parks

Description : Consider the following statement: The ex situ conservation of genetic resources can be done through: (1) Tissue culture practices (2) Maintenance of sanctuaries (3) The establishment of germplasm banks (4) The establishment of national parks

Last Answer : Ans. ((d))

With reference to plant tissue culture select the matching pair: (1) Sterile triploid—banana and seedless fruit (2) Somaclonal variations—differences appearing (3) Embryoids—non-zygatic embryo produced from somatic cells (4) Pulses—belong to cruciferae

Description : With reference to plant tissue culture select the matching pair: (1) Sterile triploid—banana and seedless fruit (2) Somaclonal variations—differences appearing (3) Embryoids—non-zygatic embryo produced from somatic cells (4) Pulses—belong to cruciferae

Last Answer : Ans. ((a))

The process through which the amount of DNA, RNA and protein can be known at a time is called (a) Autoradiography (b) Tissue culture (c) Cellular fractioning (d) Phase contrast microscopy

Description : The process through which the amount of DNA, RNA and protein can be known at a time is called (a) Autoradiography (b) Tissue culture (c) Cellular fractioning (d) Phase contrast microscopy

Last Answer : Ans. ((c))

The process by which the amount of DNA, RNA and protein can be known at a time is: (a) Cell fractionation (b) Autoradiography (c) Phase-contrast microscopy (d) Tissue culture

Description : The process by which the amount of DNA, RNA and protein can be known at a time is: (a) Cell fractionation (b) Autoradiography (c) Phase-contrast microscopy (d) Tissue culture

Last Answer : Ans. ((b))

Hormone used in tissue culture for better growth is: (1) Auxin (2) Gibberellin (3) Cytokinin (4) Vernalin

Description : Hormone used in tissue culture for better growth is: (1) Auxin (2) Gibberellin (3) Cytokinin (4) Vernalin

Last Answer : Ans. ((d))

Mark the INCORRECT statement about agar, a gelling agent in plant tissue culture medium a. Not digested by plant enzymes b. It does not use in micro-propagation work c. It does not react with media constituents d. Remain stable at incubation temperature

Description : Mark the INCORRECT statement about agar, a gelling agent in plant tissue culture medium a. Not digested by plant enzymes b. It does not use in micro-propagation work c. It does not react with media constituents d. Remain stable at incubation temperature

Last Answer : b. It does not use in micro-propagation work

Tissue culture is a good technique to a) Cross two varieties b) Rapidly increase the size of a trees by strengthening the stem c) Eliminate virus d) Improve yield of crops

Description : Tissue culture is a good technique to a) Cross two varieties b) Rapidly increase the size of a trees by strengthening the stem c) Eliminate virus d) Improve yield of crops 

Last Answer : c) Eliminate virus 

A variety or strain produced by horticultural or agricultural techniques and not normally found in natural population is called a) Hybrid b) Tissue culture c) GMO d) Cultivar

Description : A variety or strain produced by horticultural or agricultural techniques and not normally found in natural population is called a) Hybrid b) Tissue culture c) GMO d) Cultivar

Last Answer : d) Cultivar

Morphine is obtained from: (a) Aconitum nacelles (b) Papaver somniferum (c) Rauwolffia serpentine (d) Cinchona officinalis

Description : Morphine is obtained from: (a) Aconitum nacelles (b) Papaver somniferum (c) Rauwolffia serpentine (d) Cinchona officinalis

Last Answer : Ans. ((b))

Aerosols having carbon and fluorine compounds are chiefly released by: (a) Refineries (b) Automobiles (c) Industries (d) Jets 3. Coir of commerce is obtained from: (a) Endocarp of coconut (b) Mesocarp of coconut (c) Stem of jute (d) Leaves of coconut

Description : Aerosols having carbon and fluorine compounds are chiefly released by: (a) Refineries (b) Automobiles (c) Industries (d) Jets 3. Coir of commerce is obtained from: (a) Endocarp of coconut (b) Mesocarp of coconut (c) Stem of jute (d) Leaves of coconut

Last Answer : Ans. ((d))

Rubber is commercially obtained from: (a) Euphorbia (b) Betula (c) Hibiscus (d) Pinus

Description : Rubber is commercially obtained from: (a) Euphorbia (b) Betula (c) Hibiscus (d) Pinus

Last Answer : Ans. ((a))

Ergot is obtained from: (a) Albugo (b) Yeast (c) Claviceps Purpurea (d) Alternaria

Description : Ergot is obtained from: (a) Albugo (b) Yeast (c) Claviceps Purpurea (d) Alternaria

Last Answer : Ans. ((c))

Coichicine is obtained from Colchicum autumnal. It belongs to family (a) Leguminoceae (b) Solanaceae (c) Asteraceae (d) Liliaceae

Description : Coichicine is obtained from Colchicum autumnal. It belongs to family (a) Leguminoceae (b) Solanaceae (c) Asteraceae (d) Liliaceae

Last Answer : Ans. ((d))

Name the alkaloids obtained from Capsicum fruitescence and Nicotiana tabacum.

Description : Name the alkaloids obtained from Capsicum fruitescence and Nicotiana tabacum. 

Last Answer : Ans: Capsine from Capsicum and Nicotine from Nicotiana 

Jute fibre is obtained from which part of the Jute? (a) Root (b) Stem (c) Leaf (d) Fruit

Description : Jute fibre is obtained from which part of the Jute? (a) Root (b) Stem (c) Leaf (d) Fruit

Last Answer : Ans: (b)

Serpasil is obtained from the (a) plant Rauwalfia serpentine (b) cinchona tree (c) extracts of tobacco leaf (d) extracts of ginger root

Description : Serpasil is obtained from the (a) plant Rauwalfia serpentine (b) cinchona tree (c) extracts of tobacco leaf (d) extracts of ginger root

Last Answer : Ans:(a)

What is the upper part of the embryonic root called ?

Description : What is the upper part of the embryonic root called ?

Last Answer : The upper part of the embryonic root is called the hypocotyl.