Before, germination of pollen, the moisture necessary for pollen hydration is provided by

Before, germination of pollen, the moisture necessary for pollen hydration is provided by
by

1 Answer

Answer :

Before, germination of pollen, the moisture necessary for pollen hydration is provided by – Stigma
by

Related questions

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))

The process involving emasculation of the flower before anthesis and depositing pollen grains on the cut end of the ovary is called as

Description : The process involving emasculation of the flower before anthesis and depositing pollen grains on the cut end of the ovary is called as

Last Answer : The process involving emasculation of the flower before anthesis and depositing pollen grains on the cut end of the ovary is called as – Intra-ovarian pollination

What kind of germination occurs in garlic ?

Description : What kind of germination occurs in garlic ?

Last Answer : Garlic causes tuber type germination.

Consider the following statements associated with the germination of an angiospermous seed: (1) As the seed gets hydrated and germinates, enzymatic activity is increased (2) The respiration rate of the germinating seed increases along with the increased enzymatic activity (3) The increase in the respiratory rate continues till senescence (4) Rate of enzymatic activity decreases

Description : Consider the following statements associated with the germination of an angiospermous seed: (1) As the seed gets hydrated and germinates, enzymatic activity is increased (2) The respiration ... The increase in the respiratory rate continues till senescence (4) Rate of enzymatic activity decreases

Last Answer : Ans. ((b))

The hypogeal germination is found in: (a) Bean (b) Maize (c) Rhizophora (d) Cucurbita Ans. (b) Directions: In the following questions more than one answer given may be correct select the correct answers according to the code— Code— (a) 1, 2 and 3 are correct (b) 1 and 2 are correct (c) 1, 2 and 4 are correct (d) 1 and 3 are correct 26. Which of following matched correctly? (1) Piper—Climbing root (2) Ficus—Climbing root (3) Buttress root—Bombax (4) Vitis—Nodulated root

Description : The hypogeal germination is found in: (a) Bean (b) Maize (c) Rhizophora (d) Cucurbita Ans. (b) Directions: In the following questions more than one answer given may be correct select the correct ... (1) Piper-Climbing root (2) Ficus-Climbing root (3) Buttress root-Bombax (4) Vitis-Nodulated root

Last Answer : Ans. ((d))

Explain "Shimal Animal Pollen Flower" ?

Description : Explain "Shimal Animal Pollen Flower" ?

Last Answer : Animal flowers are usually fairly large. However, even though it is small, the flowers are decorated with inflorescences. Their colors are attractive. All these flowers may or may not have an odor. As these features are present in Shimul flower, Shimul flower is also an animal flower.

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))

When embryosac receives two or more than two pollen tubes the sperm nucleus fusing with the egg nucleus may be derived from one pollen tube and one fusing with the polar nuclei may be derived from other pollen tube, the phenomenon is termed as

Description : When embryosac receives two or more than two pollen tubes the sperm nucleus fusing with the egg nucleus may be derived from one pollen tube and one fusing with the polar nuclei may be derived from other pollen tube, the phenomenon is termed as

Last Answer : When embryosac receives two or more than two pollen tubes the sperm nucleus fusing with the egg nucleus may be derived from one pollen tube and one fusing with the polar nuclei may be derived from other pollen tube, the phenomenon is termed as – Heterofertilization

Effect of pollen grains on the properties of endosperms is called as

Description : Effect of pollen grains on the properties of endosperms is called as

Last Answer : Effect of pollen grains on the properties of endosperms is called as – Xenia

Very long pollen with needle shaped structures are found in

Description : Very long pollen with needle shaped structures are found in

Last Answer : Very long pollen with needle shaped structures are found in – Zostera

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

Formation of 8-nucleate embryosac by pollen grains is also called as

Description : Formation of 8-nucleate embryosac by pollen grains is also called as

Last Answer : Formation of 8-nucleate embryosac by pollen grains is also called as – Nemec phenomenon 

Pollen embryoids were first developed by

Description : Pollen embryoids were first developed by

Last Answer : Pollen embryoids were first developed by – Guha and Maheshwari

Pollen grains of angiosperms are

Description : Pollen grains of angiosperms are

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

What is meant by Monosiphonous and Polysiphonous pollen grains? Give examples.

Description : What is meant by Monosiphonous and Polysiphonous pollen grains? Give examples. 

Last Answer : Ans: Pollen gains that form single pollen tube are monosiphonous. Ex: Solanum. Which form more than one pollen tubes are Polysiphonous. Ex: Malvaceae, Cucurbitaceae 

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.

In hybridization this is not part of the technique used a) Transfer pollen b) Collect pollen c) Emasculate d) Use of two plants to bridge the stems together

Description : In hybridization this is not part of the technique used a) Transfer pollen b) Collect pollen c) Emasculate d) Use of two plants to bridge the stems together 

Last Answer : d) Use of two plants to bridge the stems together

Factors which stimulate pollen tube germination. -Biology

Description : Factors which stimulate pollen tube germination. -Biology

Last Answer : answer:

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

Which of the following statements is not correct? (a) Pollen germination and pollen tube growth are regulated by chemical components of pollen interacting with those of the pistil. (b) Some reptiles have also been reported as pollinators in some plant species. (c) Pollen grains of many species can germinate on the stigma of a flower, but only one pollen tube of the same species grows into the style. (d) Insects that consume pollen or nectar without bringing about pollination are called pollen/ nectar robbers.

Description : Which of the following statements is not correct? (a) Pollen germination and pollen tube growth are regulated by chemical components of pollen interacting with those of the pistil. (b) ... Insects that consume pollen or nectar without bringing about pollination are called pollen/ nectar robbers.

Last Answer : (c) Pollen grains of many species can germinate on the stigma of a flower, but only one pollen tube of the same species grows into the style.

Match the following concerning essential elements and their functions in plants. Column-I Column-II (A) Iron (i) Photolysis of water (B) Zinc (ii) Pollen germination (C) Boron (iii) Required for chlorophyll biosynthesis (D) Manganese (iv) IAA biosynthesis

Description : Match the following concerning essential elements and their functions in plants. Column-I Column-II (A) Iron (i) Photolysis of water (B) Zinc (ii) Pollen germination (C) Boron (iii) Required for chlorophyll biosynthesis (D) Manganese (iv) IAA biosynthesis

Last Answer : (c) (iii) (iv) (ii) (i)

Which of the following nutrient is involved in reproduction in plants and germination of pollen grains ? a. Boron b. Calcium c. Potassium d. Sulphur

Description : Which of the following nutrient is involved in reproduction in plants and germination of pollen grains ? a. Boron b. Calcium c. Potassium d. Sulphur

Last Answer : a. Boron

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

The condition not applicable to water cement ratio law, is (A) Internal moisture conditions on hydration continue till complete strength is gained (B) Concrete specimens may be tested at any temperature (C) Concrete specimens need be of same age (D) Concrete specimens need be of same size

Description : The condition not applicable to water cement ratio law, is (A) Internal moisture conditions on hydration continue till complete strength is gained (B) Concrete specimens may be tested at any temperature (C) Concrete specimens need be of same age (D) Concrete specimens need be of same size

Last Answer : Answer: Option B

What is the moisture content of seeds when germination starts ?

Description : What is the moisture content of seeds when germination starts ?

Last Answer : Germination starts when seed moisture is 35-60 %.

A few showers of rain during the months of December and January are beneficial to the rabi crops because they (a) make the plant strong (b) protect the crops from frost (c) cause fall in temperature (d) provide moisture for the germination of seeds

Description : A few showers of rain during the months of December and January are beneficial to the rabi crops because they (a) make the plant strong (b) protect the crops from frost (c) cause fall in temperature (d) provide moisture for the germination of seeds

Last Answer : Ans: (b)

Read the statement given below (i ) Seeds require moisture for germination . (ii) Plant can absorb nutrients in dissolved form. (iii) Irrigation protects crop from both frost and hot air currents . (iv) Irrigation improves soil texture . a) i and ii b) i ,ii, iii c) i , ii , iii , iv . d) i and iii

Description : Read the statement given below (i ) Seeds require moisture for germination . (ii) Plant can absorb nutrients in dissolved form. (iii) Irrigation protects crop from both frost and hot air currents . (iv) Irrigation improves soil texture . a) i and ii b) i ,ii, iii c) i , ii , iii , iv . d) i and iii

Last Answer : a) i and ii

In a national park protection is provided to: (a) Entire ecosystem (b) Flora and fauna (c) Fauna only (d) Flora only

Description : In a national park protection is provided to: (a) Entire ecosystem (b) Flora and fauna (c) Fauna only (d) Flora only

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Why is sweating called Necessary evil ?

Description : Why is sweating called Necessary evil ?

Last Answer : Perspiration is an inevitable process in plant life. As a result of perspiration, a lot of water evaporates from the body of the plant. It can also cause plant death. Therefore, perspiration seems to ... process in the life of plants. This is why perspiration is called a Necessary evil for plants .

Moll’s experiment explains that (a) Carbon dioxide is essential for photosynthesis (b) Chlorophyll and water are necessary for photosynthesis (c) Light and water are essential for photosynthesis (d) All of the above are correct

Description : Moll’s experiment explains that (a) Carbon dioxide is essential for photosynthesis (b) Chlorophyll and water are necessary for photosynthesis (c) Light and water are essential for photosynthesis (d) All of the above are correct

Last Answer : Ans. ((a))

Is soil necessary for seed germination? -Biology

Description : Is soil necessary for seed germination? -Biology

Last Answer : answer:

Is water necessary for seed germination? -Biology

Description : Is water necessary for seed germination? -Biology

Last Answer : answer:

Why is water necessary for seed germination? -Biology

Description : Why is water necessary for seed germination? -Biology

Last Answer : answer:

Is soil necessary for seed germination? -Biology

Description : Is soil necessary for seed germination? -Biology

Last Answer : answer:

Is water necessary for seed germination? -Biology

Description : Is water necessary for seed germination? -Biology

Last Answer : answer:

Why is water necessary for seed germination? -Biology

Description : Why is water necessary for seed germination? -Biology

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The tillage aims to reduce tillage to the minimum necessary for ensuring a good seed-bed, rapid germination, satisfactory stands and favourable growing condition?

Description : The tillage aims to reduce tillage to the minimum necessary for ensuring a good seed-bed, rapid germination, satisfactory stands and favourable growing condition?

Last Answer : Ans.Minimum tillage

Design an experiment to investigate the condition necessary for germination?

Description : Design an experiment to investigate the condition necessary for germination?  

Last Answer : Procedure: - i) Take four jars and put some cotton wool in the bottom of each jar. ii) Drop five seeds of gram into each jar. iii) Arrange the conditions for each jar. ... low temperature. Result: - Germination of seed requires, water, oxygen and proper temperature. 

What conditions are necessary for germination of seeds?

Description : What conditions are necessary for germination of seeds?

Last Answer : Seeds need sufficient food for germination, which they get from cotyledons. Following environmental conditions are necessary for seed germination: - Moisture or Water: - i) Seed absorb water and swell ... C. ii) This range of temperature of very necessary for the enzymes to function. 

Why it is sometimes necessary to preheat the base material before welding? a) To remove oil and grease b) To remove moisture from inside the material c) To prevent the possible risk of cracking d) Not required if using cellulosic electrodes as these will provide enough heat

Description : Why it is sometimes necessary to preheat the base material before welding? a) To remove oil and grease b) To remove moisture from inside the material c) To prevent the possible risk of cracking d) Not required if using cellulosic electrodes as these will provide enough heat

Last Answer : c) To prevent the possible risk of cracking

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:

In bioremediation, bio-films are usually used a. At the source of pollutant b. After collection of pollutant c. After treatment of pollutant d. Before pollutant is produced

Description : In bioremediation, bio-films are usually used a. At the source of pollutant b. After collection of pollutant c. After treatment of pollutant d. Before pollutant is produced

Last Answer : a. At the source of pollutant

Mark the correct option a) Where the access to information is to be provided in the printed or in any electronic format, the applicant shall pay such fee as may be prescribed b) No such fee shall be charged from the persons whore are below poverty line c) The information shall be provided the information free of charge where a public authority fails to comply with the time limits specified. d) Before taking the decision consideration of third party representation is necessary e) All the above

Description : Mark the correct option a) Where the access to information is to be provided in the printed or in any  electronic format, the applicant shall pay such fee as may be prescribed b) No ... . d) Before taking the decision consideration of third party representation is necessary  e) All the above

Last Answer : e) All the above

A generator has been exposed to water and is being checked for its safe operation. Therefore, it is necessary to _______________. A. check for shorted coils with a growler B. take moisture readings with a hydrometer C. test insulation values with a megger D. ground the commutator, or slip rings and run it at half load for 12 hours

Description : A generator has been exposed to water and is being checked for its safe operation. Therefore, it is necessary to _______________. A. check for shorted coils with a growler B. take moisture readings with a ... a megger D. ground the commutator, or slip rings and run it at half load for 12 hours

Last Answer : Answer: C

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Last Answer : Commercial grade H2SO4 treatment

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Description : Exposure of seed to low temperature before germination is termed as : a. Scarification b. Stratification c. Vernalization d. All of above

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Description : How do you care for an orchid?

Last Answer : I have two, and they require almost no care except water. It is the time of year they shed their blossoms so don’t worry. In the spring they will come right back.

Where's can I buy one of those new "Jumbo" Venus Flytrap's?

Description : Where's can I buy one of those new "Jumbo" Venus Flytrap's?

Last Answer : You can buy them at The Little Shop of Horrors.