Description : In plant cells, peroxisomes are associated with (a) photorespiration (b) phototropism (c) photoperiodism (d) photosynthesis.
Last Answer : (a) photorespiration
Description : Phytochrome is involved in (a) phototropism (b) photorespiration (c) photoperiodism (d) geotropism
Last Answer : (c) photoperiodism
Description : Bending of plants towards light is called— (A) Phototropism (B) Vernalisation (C) Photo-respiration (D) None of these
Last Answer : (A) Phototropism
Description : The response of different organisms to the environmental rhythms of light and darkness is called (a) vernalization (b) photoperiodism (c) phototaxis (d) phototropism.
Last Answer : b) photoperiodism
Description : What is the process of growth of a plant toward a light stimulus is called? a. Geotropism b. Chemotropism c. Phototropism d. Hydrotropism
Last Answer : c. Phototropism
Description : C4 plant normaly produce more biological yield than C3 plant because of: (A) More photorespiration (B) Less photorespiration (C) Less photophosphorylation (D) More photophosphorylation
Last Answer : (B) Less photorespiration
Description : Which of the following is correct about the photorespiration? a. Photorespiration is more efficient in synthesizing glucose than photosynthesis. b. C3 plants are best adapted to handle c. ... During photorespiration plants use oxygen to break down carbohydrates and release e. All of these
Last Answer : c. Photorespiration is likely to occur when oxygen level is high and CO2 level is
Description : The tendency of a plant to grow toward light is called: a) photosynthesis b) photoinduction c) phototropism (pron: fo-tot-row-piz-em) d) photolysis (pron: fo-tol-eh-sis)
Last Answer : ANSWER: C -- PHOTOTROPISM
Description : Photoperiodism affects – (1) All of these (2) Flowering (3) Vegetative growth (4) Fruiting
Last Answer : (1) All of these Explanation: Photoperiodism is the developmental responses of plants to the relative lengths of light and dark periods. It affects the vegetative growth as well as ... period, while in yet other species the plant may continue vegetative development indefinitely without flowering.
Description : When we migrate from dark to light, we fail to see for sometime but after a time visibility becomes normal. It is example of (a) accomodation (b) adaptation (c) mutation (d) photoperiodism.
Last Answer : (b) adaptation
Description : Which plant hormone is related to phototropism? -Biology
Last Answer : answer:
Description : Which plant growth regulator is used for ripening? a) GA b) IBA c) Ethylene d) Cytokinin
Last Answer : c) Ethylene
Description : Why must one control green plant growth in aquaculture or fish farming? [a] Plants compete with fish for available DO [b] Plants compete with fish for available O2 [c] Plants compete with fish for available CO2 [d] All of these [e] None of the above
Last Answer : [a] Plants compete with fish for available DO
Description : How does phototropism occur in plants? -Biology-10
Last Answer : Phototropism is a growth movement induced by a light stimulus. Growth towards a source of light is called positive phototropism, that away from the source is termed negative phototropism. The tips of shoots ... that the tip was, in some way, communicating with the cells of the region of elongation.
Description : How does phototropism occur in plants ? -Biology-10
Last Answer : The movement in any part of a plant due to light is called phototropism. The shoot of plant shows positive phototropism and roots show negative phototropism. Phototropism in plants occurs due to the hormone ... in length of the cells in shady part. So, the plant appears to bend towards light.
Description : Name the stimulus involved in each of the following phenomenon: (i) Phototropism (ii) Geotropism. -Science
Last Answer : (i) Light (ii) Gravity.
Description : Which hormones are responsible for phototropism? -Biology
Last Answer : Growth curvature response of plants towards light is known as phototropism which is mediated by auxins in plants.
Description : What is Negative Phototropism ?
Last Answer : : Phototropism is a type of curvature of plants. The stems and branches of the plant always move towards the ala and the roots always move in the opposite direction to the ala. In contrast to Ala, the movement of the root is called negative phototropic pism .
Description : Cholodny-Went theory is connected with: (1) Photo morphogenesis (2) Phototropism (3) Nastic movement (4) Geotropism
Last Answer : Ans. ((c))
Description : Define the following. a) Phototropism
Last Answer : a) Phototropism - The response of plants towards light b) Geotropism - The response of plants towards gravity c) Hydrotropism - The response of plants towards water d) Thigmotropism - The ... The response of plants towards temperature/heat f) Chemotropism - The response of plants towards chemicals
Description : What are auxins? What is affect of auxins on phototropism and geotropism?
Last Answer : Auxins are plants hormones. Geotropism and phototropism are caused by unequal growth of plant parts and controlled by auxins. Effect on phototropism: - From shoot, auxins pass down to the growing ... of root towards force of gravity. So roots grow in earth and show positive geotropic response.
Description : What is photoperiodism in plants? -Biology
Description : Difference between photoperiodism and vernalization. -Biology
Description : Critical day length photoperiodism. -Biology
Description : Is photoperiodism a tropism? -Biology
Description : Photoperiodism was first char acterised in
Last Answer : Photoperiodism was first char acterised in A. Tabacco B. Potato C. Tomato D. Cotton
Description : Impotance of day length ( photoperiodism ) in flowering of plants was first shown in
Last Answer : Impotance of day length ( photoperiodism ) in flowering of plants was first shown in A. Cotton B. Petunia C. Lemna D. Tobacco
Description : Photoperiodism is probably due to synthesis of
Last Answer : Photoperiodism is probably due to synthesis of A. Cytokinins B. Gibberellins C. Auxin D. Florigen
Description : Plants response to the relative length of daylight or darkness is known as: a. long day b. Short day c. Neutral d. Photoperiodism
Last Answer : Photoperiodism
Description : Photoperiodism was first characterised in (a) tobacco (b) potato (c) tomato (d) cotton.
Last Answer : (a) tobacco
Description : What is the lack of root growth ?
Last Answer : Root growth is reduced due to lack of nitrogen.
Description : Other things being suitable, what level of temperature is considered ideal for optimum growth of banana crop ? (A) 36°C (B) 18°C (C) 30°C (D) 12°C (E) 27°C
Last Answer : (C) 30°C
Description : To be self reliant in agriculture the following growth rate per year is necessary (a) 3.0% (b) 3.5% (c) 4.0%(d) 4.5%
Last Answer : (b) 3.5%
Description : What is the contribution of Animal Husbandry Sector in the agricultural growth ? (A) 10% (B) 12% – 15% (C) 7% – 9% (D) 5%
Last Answer : (C) 7% – 9%
Description : Which climate is required for better growth and production of crops ? (A) Hot-dry (B) Cold-dry (C) Cold-moist (D) Hot-wet
Last Answer : (B) Cold-dry
Description : Which one of the following is used in organic farming to prevent weed Germination & growth? A. Cow pea B. chick pea C. linseed D. Mulching
Last Answer : D. Mulching
Description : What is the essential growth of and quantities development of fruits? a. Humidity b. Wind c. Solar Radiation d. Temperature e. Water
Last Answer : d. Temperature
Description : The inherent capacity of soil to provide essential chemical elements for the growth of plants is termed as – a. Soil Productivity b. Soil Fertility c. Soil capacity d. Soil flexibility e. Soil Utility
Last Answer : b. Soil Fertility
Description : Potato tuber growth is stopped at what temperature ? (a) 40°C — 42°C (b) 30°C — 32°C (c) 35°C — 37°C (d) 38°C – 40°C
Last Answer : (b) 30°C — 32°C
Description : Growth of early emerging leaves becomes faster because of- (a) Cell division and cell enlargement (b) Stunt growth of plants (c) Faster Photosynthesis (d) Low pressure of outer atmosphere
Last Answer : (b) 15°C – 40°C
Description : Application of Phosphorus and Sulphur increase a Better nodulation b Better growth c Better yield d All
Last Answer : d All
Description : The energy-releasing metabolic process in which substrate is oxidised without an external electron acceptor is called (a) glycolysis (b) fermentation (c) aerobic respiration (d) photorespiration.
Last Answer : (b) fermentation
Description : What is the importance of photorespiration in plants? -Biology
Description : Explain the process of photorespiration. -Biology
Description : Why photorespiration is considered a loss to C3 plants? -Biology
Description : Why does not photorespiration take place in C4 plants? -Biology
Last Answer : Photorespiration occurs due to the oxygenase activity of RuBisCO. When the concentration of O2 is high, RuBisCO binds to oxygen and carries out photorespiration. C4 plants have a mechanism of maintaining high CO2 concentration at the enzyme site, thus photorespiration does not occur