Polyploidy level in embryo and endosperm of seed

Polyploidy level in embryo and endosperm of seed
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Polyploidy level in endosperm of Triticum aestivum

Description : Polyploidy level in endosperm of Triticum aestivum

Last Answer : Ans. 63

Polyploidy level of testa and pollen mother cell of seed

Description : Polyploidy level of testa and pollen mother cell of seed

Last Answer : Ans. 2n

The nutritive tissue around the embryo in seed is a. Endosmosis b. Endodermis c. Endosperm d. Embryo-sac

Description : The nutritive tissue around the embryo in seed is a. Endosmosis b. Endodermis c. Endosperm d. Embryo-sac

Last Answer : Endosperm

Coconut water from a tender coconut is (a) innermost layers of the seed coat (b) degenerated nucellus (c) immature embryo (d) free nuclear endosperm

Description : Coconut water from a tender coconut is (a) innermost layers of the seed coat (b) degenerated nucellus (c) immature embryo (d) free nuclear endosperm

Last Answer : (d) free nuclear endosperm.

Endosperm is consumed by developing embryo in the seed of (a) pea (b) maize (c) coconut (d) castor.

Description : Endosperm is consumed by developing embryo in the seed of (a) pea (b) maize (c) coconut (d) castor.

Last Answer : (a) pea

Selaginella and Salvinia are considered to represent a significant step toward evolution of seed habit because (a) female gametophyte is free and gets dispersed like seeds (b) female gametophyte lacks archegonia (c) megaspores possess endosperm and embryo surrounded by seed coat (d) embryo develops in female gametophyte which is retained on parent sporophyte.

Description : Selaginella and Salvinia are considered to represent a significant step toward evolution of seed habit because (a) female gametophyte is free and gets dispersed like seeds (b) female gametophyte ... by seed coat (d) embryo develops in female gametophyte which is retained on parent sporophyte.

Last Answer : (b) female gametophyte lacks archegonia

The emergence and development of seedlings from the seed-embryo under favourable condition

Description : The emergence and development of seedlings from the seed-embryo under favourable condition

Last Answer : Ans. Germination

A fertilized ovule consisting of intact embryo, stored food and seed-coat which is viable and has got the capacity to germinate

Description : A fertilized ovule consisting of intact embryo, stored food and seed-coat which is viable and has got the capacity to germinate

Last Answer : Ans. Seed

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))

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))

The nutritive tissue in the seeds of higher plants is known as - (1) hypocotyl (2) embryo (3) endosperm (4) nucellus

Description : The nutritive tissue in the seeds of higher plants is known as - (1) hypocotyl (2) embryo (3) endosperm (4) nucellus

Last Answer : (3) endosperm Explanation: The seed includes three primary regions: the embryo, nutritive tissue, and seed coat. Endosperm is a nutritive tissue that sustains the embryo and seedling. The endosperm may ... the embryo as in many legumes, which use the cotyledons as a food source during germination.

Embryo sac occurs in (a) embryo (b) axis part of embryo (c) ovule (d) endosperm.

Description : Embryo sac occurs in (a) embryo (b) axis part of embryo (c) ovule (d) endosperm.

Last Answer : (c) ovule

Which one of the following statements regarding post-fertilisation development in flowering plants is incorrect? (a) Ovules develop into embryo sac. (b) Ovary develops into fruit. (c) Zygote develops into embryo. (d) Central cell develops into endosperm

Description : Which one of the following statements regarding post-fertilisation development in flowering plants is incorrect? (a) Ovules develop into embryo sac. (b) Ovary develops into fruit. (c) Zygote develops into embryo. (d) Central cell develops into endosperm

Last Answer : (a) Ovules develop into embryo sac.

In angiosperms, functional megaspore develops into (a) embryo sac (b) ovule (c) endosperm (d) pollen sac.

Description : In angiosperms, functional megaspore develops into (a) embryo sac (b) ovule (c) endosperm (d) pollen sac.

Last Answer : a) embryo sac

Oil reserve of groundnut is present in (a) embryo (b) cotyledons (c) endosperm (d) underground tubers

Description : Oil reserve of groundnut is present in (a) embryo (b) cotyledons (c) endosperm (d) underground tubers

Last Answer : (b) cotyledons

The coconut water and the edible part of coconut are equivalent to (a) endosperm (b) endocarp (c) mesocarp (d) embryo.

Description : The coconut water and the edible part of coconut are equivalent to (a) endosperm (b) endocarp (c) mesocarp (d) embryo.

Last Answer : (a) endosperm

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

Functional megaspore in an angiosperm develops into ? (1) Endosperm (2) Embryo sac (3) Embryo (4) Ovule

Description : Functional megaspore in an angiosperm develops into ? (1) Endosperm (2) Embryo sac (3) Embryo (4) Ovule

Last Answer : (2) Embryo sac

The coconut water and the edible part of coconut are equivalent to (1) Embryo (2) Endosperm (3) Endocarp (4) Mesocarp

Description : The coconut water and the edible part of coconut are equivalent to (1) Embryo (2) Endosperm (3) Endocarp (4) Mesocarp

Last Answer : (2) Endosperm

The nutritive tissue in the seeds of higher plants is known as (1) hypocotyl (2) embryo (3) endosperm (4) nucellus

Description : The nutritive tissue in the seeds of higher plants is known as (1) hypocotyl (2) embryo (3) endosperm (4) nucellus

Last Answer : endosperm

When a diploid female plant is crossed with a tetraploid male, the ploidy of endosperm cells in the resulting seed is (a) tetraploidy (b) pentaploidy (c) diploidy (d) triploidy.

Description : When a diploid female plant is crossed with a tetraploid male, the ploidy of endosperm cells in the resulting seed is (a) tetraploidy (b) pentaploidy (c) diploidy (d) triploidy.

Last Answer : (a) tetraploidy

Endosperm like tissue (2n) in seed developing from nucellus is : c. Endospem d. Cotyledom e. Perisperm f. Mericar

Description : Endosperm like tissue (2n) in seed developing from nucellus is : c. Endospem d. Cotyledom e. Perisperm f. Mericar

Last Answer : Perisperm

An example of a seed with endosperm, perisperm, and caruncle is (a) coffee (b) lily (c) castor (d) cotton

Description : An example of a seed with endosperm, perisperm, and caruncle is (a) coffee (b) lily (c) castor (d) cotton

Last Answer : (c) castor

The scutellum observed in a grain of wheat or maize is comparable to which part of the seed in other monocotyledons? (a) Cotyledon (b) Endosperm (c) Aleurone layer (d) Plumule

Description : The scutellum observed in a grain of wheat or maize is comparable to which part of the seed in other monocotyledons? (a) Cotyledon (b) Endosperm (c) Aleurone layer (d) Plumule

Last Answer : (a) Cotyledon

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

Young embryo is removed from developing seeds and planted on a suitable nutrient medium in vitro is called as

Description : Young embryo is removed from developing seeds and planted on a suitable nutrient medium in vitro is called as

Last Answer : Ans. Embryo culture

Embryo originates from unfertilized egg

Description : Embryo originates from unfertilized egg

Last Answer : Ans. Parthenogenesis

$ 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.

Colchicines bring about: (a) Polyploidy (b) Cell division (c) Cell elongation (d) Cell differentiation

Description : Colchicines bring about: (a) Polyploidy (b) Cell division (c) Cell elongation (d) Cell differentiation

Last Answer : Ans. ((a))

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.

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 cell plate and thus the cell is containing more number of chromosomes as compared to other dividing cells. This would result in (a) somaclonal variation (b) polyteny (c) aneuploidy (d) polyploidy.

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.

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

Write two precautions to be taken while identifying different parts of an embryo of a dicot seed. -Science

Description : Write two precautions to be taken while identifying different parts of an embryo of a dicot seed. -Science

Last Answer : (i) The slide should be properly focused. (ii) Slide should be observed first under low-power magnification and then under high-power magnification of the compound microscope.

why the seed has an embryo and not zygote? -Biology

Description : why the seed has an embryo and not zygote? -Biology

Last Answer : answer:

why the seed has an embryo and not zygote? -Biology

Description : why the seed has an embryo and not zygote? -Biology

Last Answer : answer:

What precautions will you take while doing the study of different parts of an embryo of a dicot seed?

Description : What precautions will you take while doing the study of different parts of an embryo of a dicot seed?

Last Answer : What precautions will you take while doing the study of different parts of an embryo of a dicot seed?

What does embryo the cotyledon and the seed coat do?

Description : What does embryo the cotyledon and the seed coat do?

Last Answer : Feel Free to Answer

Maize grain is (a) A seed (b) An embryo (c) An ovule (d) A fruit

Description : Maize grain is (a) A seed (b) An embryo (c) An ovule (d) A fruit

Last Answer : Ans:(d)

Dormancy of seed is a biological mechanisms that provides protection against ______: a. Seed spoilage b. Embryo abortion c. Pre mature germination d. Dehydration

Description : Dormancy of seed is a biological mechanisms that provides protection against ______: a. Seed spoilage b. Embryo abortion c. Pre mature germination d. Dehydration

Last Answer : Pre mature germination

Ripened ovary is called as: a. Flower b. Seed c. Fruit d. Embryo

Description : Ripened ovary is called as: a. Flower b. Seed c. Fruit d. Embryo

Last Answer : Fruit

Salient factors which contribute to the fruit drop are: a. Embryo abortion b. Seed number of fruit c. Moisture supply d. All of the above

Description : Salient factors which contribute to the fruit drop are: a. Embryo abortion b. Seed number of fruit c. Moisture supply d. All of the above

Last Answer : All of the above

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).

Top-shaped multiciliate male gametes and the mature seed which bears only one embryo with two cotyledons, are characterised features of (a) cycads (b) conifers (c) polypetalous angiosperms (d) gamopetalous angiosperms.

Description : Top-shaped multiciliate male gametes and the mature seed which bears only one embryo with two cotyledons, are characterised features of (a) cycads (b) conifers (c) polypetalous angiosperms (d) gamopetalous angiosperms.

Last Answer : (a) cycads

Write two precautions to be taken while identifying different parts of an embryo of a dicot seed.

Description : Write two precautions to be taken while identifying different parts of an embryo of a dicot seed.

Last Answer : Answer. (i) The slide should be properly focused. (ii) Slide should be observed first under low-power magnification and then under high-power magnification of the compound microscope.

5.Scutellum, coleoptile, coleorhiza and epiblast are part of ---------------- . (a)Dicot embryo, b)Grass embryo, c)Castor seed, d)bean seed)

Description : 5.Scutellum, coleoptile, coleorhiza and epiblast are part of ---------------- . (a)Dicot embryo, b)Grass embryo, c)Castor seed, d)bean seed)

Last Answer : b)Grass embryo,

Occurrence of more than one embryo in a seed is known as: a) Polyembryony b) parthenocarpy c) Apomixis d) Embryogeny

Description : Occurrence of more than one embryo in a seed is known as: a) Polyembryony b) parthenocarpy c) Apomixis d) Embryogeny

Last Answer : Ans: a) Polyembryony

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