Phytohormones are
(a) chemical regulating flowering
(b) chemical regulating secondary growth
(c) hormones regulating growth from seed to
adulthood
(d) regulators synthesised by plants and influencing
physiological processes.

1 Answer

Answer :

(d) regulators synthesised by plants and influencing
physiological processes.

Related questions

Description : Give reason: Phytohormones are also called growth regulators.

Last Answer : Phytohormones are organic compounds which regulate plant growth and development in plants. Hence they are called growth regulators also.

Description : Through their effects on plant growth regulators, what do the temperature and light control in the plants? (a) Apical dominance (b) Flowering (c) Closure of stomata (d) Fruit elongation

Last Answer : (b) Flowering

Description : What is an antibiotic? (1) A chemical compound produced by a living organism that inhibits the growth of other organisms (2) Acompound synthesised by a living organism that inhibits the ... compound inhibiting the growth of other organisms (4) Asynthetic compound inhibiting the growth of bacteria

Last Answer : (4) Asynthetic compound inhibiting the growth of bacteria Explanation: Antibiotics, also known as antimicrobial drugs, are drugs that fight infections caused by bacteria. Alexander Fleming discovered the ... (not produced by microorganisms) that can also kill or inhibit the growth of microbes.

Description : What is an antibiotic ? (1) A chemical compound produced by a living organism that inhibits the growth of other organisms (2) A compound synthesised by a living organism that inhibits the ... compound inhibiting the growth of other organisms (4) A synthetic compound inhibiting the growth of bacteria

Last Answer : A synthetic compound inhibiting the growth of bacteria

Description : It takes very long time for pineapple plants to produce flowers. Which combination of hormones can be applied to artificially induce flowering in pineapple plants throughout the year to increase yield? ... (b) Auxin and Ethylene (c) Gibberellin and Cytokinin (d) Gibberellin and Abscisic acid

Last Answer : (b) Auxin and Ethylene

Description : Regulating hormones from hypothalamus reach adenohypophysis through

Last Answer : Regulating hormones from hypothalamus reach adenohypophysis through A. Neuron B. Neuroendocrine cells C. Portal blood vessel D. Diffusion

Description : Enzymes, vitamins and hormones are common in (A) Being proteinaceous (B) Being synthesized in the body of organisms (C) Enhancing oxidative metabolism (D) Regulating metabolism

Last Answer : Answer : D

Description : The following are true about calcium regulating hormones: a. calcitonin increases the plasma calcium concentration b. vitamin D is produced in the skin c. vitamin D is metabolized to its active form in the liver and kidney. d. vitamin D increases calcium absorption from the gut

Last Answer : vitamin D increases calcium absorption from the gut

Description : Enzymes, vitamins and hormones can be classified into a single category of biological chemicals, because all of these (a) help in regulating metabolism (b) are exclusively synthesized in the body of a living organism as at present (c) are conjugated proteins (d) enhance oxidative metabolism.

Last Answer : (a) help in regulating metabolism

Description : Which one of the following hormones thought synthesised elsewhere, is stored and released by the master gland ?

Last Answer : Which one of the following hormones thought synthesised elsewhere, is stored and released by ... hormone C. Luteinizing hormone D. Prolactin

Description : Steroid hormones are synthesised from (A) Cholesterol (B) 7-Dehydrocholesterol (C) Calcitriol (D) 7-Hydroxycholesterol

Last Answer : Answer : A

Description : Steroid hormones are synthesised in all of the following except (A) Testes (B) Ovaries (C) Adrenal medulla (D) Adrenal cortex

Last Answer : Answer : A

Description : Hormones act only on specific organs or tissues. These are called (A) Active sites (B) Reaction centre (C) Target organ/Tissue(D) Physiological site HORMONE METABOLISM 231

Last Answer : Answer : C

Description : What are phytohormones ?

Last Answer : The growth and development of plants , the formation of different organs, etc., are caused by the influence of a special type of biochemical substance produced in the plant body. Which controls ... growth agents. The phytohormones found in plants are auxin , gibberellin , cytokinin and absolic acid.

Description : What are phytohormones? Give example.

Last Answer : Plant hormones are also called phytohormones. They are organic compounds which are produced by tissues that regulate plant growth and development.

Description : Assertion: Some orgainsms can maintain internal homeostasis by means of physiological processes and are called "regulates." Reason: Regulates can main

Last Answer : Assertion: Some orgainsms can maintain internal homeostasis by means of physiological processes and are called " ... Reason are false, then mark (4).

Description : The antagonism between adrenaline and histamine is called ‘physiological antagonism’ because: A. Both are physiologically present in the body B. They act on physiological receptors C. Both affect many physiological processes D. They have opposite physiological effects

Last Answer : D. They have opposite physiological effects

Description : The antagonism between adrenaline and histamine is called ‘physiological antagonism’ because: A. Both are physiologically present in the body B. They act on physiological receptors C. Both affect many physiological processes D. They have opposite physiological effects

Last Answer : D. They have opposite physiological effects

Description : 56. The nurse is aware that acromegaly is a condition when growth hormone occurs in excess in adulthood or after epiphyses of the long bones have fused. The following are the typical features of the disorder except

Last Answer : C. The client grows taller

Description : Which of the following best explains the pattern of mental growth? Options: A) A steady and uniform growth from birth to early adulthood B) A growth pattern paralleling the physical ... off to the middle twenties D) An erratic pattern from individual to individual precluding any generalization

Last Answer : C) A uniform rise to the middle teens and a gradual levelling off to the middle twenties

Description : The main purpose of control rod in a nuclear reactor is to control the (A) Chain reaction and hence the power output by regulating the number of secondary neutrons causing fission (B) ... radiation (C) Conversion of fissile material into fertile material (D) Velocity of the secondary neutrons

Last Answer : (A) Chain reaction and hence the power output by regulating the number of secondary neutrons causing fission

Description : Consider the following statements about pollination. 1. Transfer of pollen grains from the anther to ovules in the same flower or a different f lower is called pollination. 2. The pollination by wind is called anemophily. 3. Pollination is a ... 1 and 3 (b) 1, 2 and 4 (c) Only 2 (d) 1, 2, 3 and 4

Last Answer : Ans:(c)

Description : How seed and fruit are formed in flowering plants? What are the parts of seed? 

Last Answer : Seed Formation: - Ripened ovule after fertilization is called seed. The seeds are the embryos of flowering plants in dormant stage. Seeds provide protection and nourishment to the embryo. A seed has three ... fleshy or scaly and forms fruit. Fruit protect seed and help in dispersal of the plant.  

Description : Seed formation without fertilisation in flowering plants involves the process of (a) somatic hybridisation (b) apomixis (c) sporulation (d) budding

Last Answer : (b) apomixis

Description : What happens during seed germination? (a) Heat is liberated (b) Starch is synthesised (c) Fat is synthesised (d) Light is absorbed

Last Answer : Ans:(a)

Description : Mention the functions of plant growth regulators.

Last Answer : Plant growth regulators promote cell division, cell enlargement/elongation and cell differentiation. They induce photropic movement of shoot system.

Description : Mention the types of growth regulators and give example.

Last Answer : a) Plant growth promoters ex: Auxins, Gibberellins, cytokinins b) Plant growth inhibitors ex: Abscisic acid, Ethylene

Description : Synthetic growth regulators are com- monly known as

Last Answer : Morphactins

Description : The amount of growth regulators present in naturally parthenocarpic fruits is: a. High b. Low c. Intermediate d. None of above

Last Answer : High

Description : Which one of the following growth regulators is known as ‘stress hormone’? (a) Abscisic acid (b) Ethylene (c) GA3 (d) Indole acetic acid

Last Answer : (a) Abscisic acid

Description : Growth regulating herbicides that act simi lar to that of endogenous auxin (IAA) a). Benzoic acid b). pyridine carboxylic acid c). quinoline carboxylic acid d). All

Last Answer : d). All

Description : Dormancy in plant and seed is mainly due to a. Environmental factor b. Physiological factor c. a & b d. None

Last Answer : a & b

Description : Stage at which seed achieves it maximum dry weight and has maximum germination potential and vigor is: a. Physiological maturity b. Edible maturity c. Harvest maturity d. None of above

Last Answer : Physiological maturity

Description : An improved variety of transgenic basmati rice (a) does not require chemical fertilizers and growth hormones (b) gives high yield and is rich in vitamin A (c) is completely resistant to all insect pests and diseases of paddy (d) gives high yield but has no characteristic aroma.

Last Answer : (b) gives high yield and is rich in vitamin A

Description : A pheromone is A) an endorphin released within the anterior pituitary. B) a growth factor related to the production of tumors. C) a product of a neurosecretory cell that acts on ... ) a regulatory hormone that stimulates or inhibits the release of hormones produced by other endocrine glands.

Last Answer : D) a chemical released by one animal to affect the behavior of another animal.

Description : In spite of several angiospermic features Gnetum is a gymnosperm because…. a) polyembryony is a common features b) prothallial cell is present in the male gametophyte c) seed is naked d) stem exhibit anomalous secondary growth

Last Answer : c) seed is naked

Description : During chemical evolution, key biological compounds were synthesised

Last Answer : During chemical evolution, key biological compounds were synthesised A. in the atomosphere B. along the ocean ... . in the ocean D. none of the above

Description : An antibiotic is - (1) achemical synthesized by a human cell against a microorganism (2) a chemical synthesised by amicro-organism against another micro-organisms (3) a substance produced by blood cells against bacteria (4) a substance produced by blood cells against infection.

Last Answer : (2) a chemical synthesised by amicro-organism against another microorganisms Explanation: An antibacterial is an agent that inhibits bacterial growth or kills bacteria. The term is often used ... by a microorganism that is antagonistic to the growth of other microorganisms in high dilution.

Description : An antibiotic is (1) a chemical synthesized by a human cell against a microorganism (2) a chemical synthesised by a micro-organism against another micro-organisms (3) a substance produced by blood cells against bacteria (4) a substance produced by blood cells against infection.

Last Answer : a chemical synthesised by a micro-organism against another micro-organisms

Description : You find a herbaceous flowering plant growing in your school garden having leaves with parallel venation. Choose the correct additional features the given plant would be possessing. (I) It has no secondary vascular tissues. (II) Its flower ... (2) (I) and (III) (3) (II) and (IV) (4) (III) and (IV)

Last Answer : 1) (I) and (II)

Description : How long after flowering does the seed on a sunflower take ?

Last Answer : Be patient. They will dry out as the day gets shorter and the air dryer. But be careful; the birds (goldfinches, for example) may harvest the seeds before you.

Description : Vernalization is a. Cooling of seed during germination to accelerate flowering b. Warming of seed during germination to accelerate flowering c. Boiling of seed during germination to accelerate flowering d. None of the above

Last Answer : a. Cooling of seed during germination to accelerate flowering

Description : The ovary of a flowering plant can develop into a: a) spore b) fruit c) cone d) seed

Last Answer : ANSWER: B -- FRUIT

Description : The form of carbohydrate which is synthesised in plants is (1) Starch (2) Glucose (3) Fructose (4) Cellulose 

Last Answer : Glucose

Description : Boiling of an egg is a change which is-----? A. Physical B. Chemical (Answer) C. Physiological

Last Answer : B. Chemical (Answer)

Description : Main function of biofertilizer is— (A) To increase chemical process (B) To increase physiological process (C) To increase biological process (D) To increase photosynthesis process

Last Answer : (C) To increase biological process

Description : The antidotal action of sodium nitrite in cyanide poisoning is based on: A. Physical antagonism B. Chemical antagonism C. Physiological antagonism D. Noncompetitive antagonism

Last Answer : B. Chemical antagonism

Description : The antidotal action of sodium nitrite in cyanide poisoning is based on: A. Physical antagonism B. Chemical antagonism C. Physiological antagonism D. Noncompetitive antagonism

Last Answer : B. Chemical antagonism

Description : Main function of biofertilizer is a) To increase chemical process b) To increase physiological process c) To increase biological process d) To increase photosynthesis process 

Last Answer : c) To increase biological process