Description : Which of the following statement is correct? (1) The causal organism for foolish seedling disease is the source of gibberellin (2) Abscisic acid is a growth promoter (3) The ratio of auxin : cytokinin control cell differentiation (4) Bolting of cabbage can be induced by treatment with IAA
Last Answer : Ans. ((d))
Description : Development of shoot and root is determined by: (a) Cytokinin and auxin ratio (b) Enzymes (c) Temperature (d) Plant nutrients
Last Answer : Ans. ((a))
Description : Hormone used in tissue culture for better growth is: (1) Auxin (2) Gibberellin (3) Cytokinin (4) Vernalin
Description : The hormone responsible for ripening of fruits is (a) Ethylene (b) Cytokinin (c) Auxin (d) ABA
Description : The hormone reducing transpiration rate by inducing stomatal closure is: (a) ABA (b) Ethylene (c) Cytokipin (d) Auxin
Description : Hormone pair required for a callus to differentiate is a. auxin and cytokinin b. auxin and ethylene c. auxin and abscisic acid d. cytokinin and gibberellins
Last Answer : a. auxin and cytokinin
Description : What are bundle sheath extensions? What is their role?
Last Answer : Ans: The extensions of bundle sheath of leaf towards adaxial and abaxial sides of leaf are called as bundle sheath extensions. They help in conduction and providing mechanical strength.
Description : What are bulliform cells? What is their role?
Last Answer : Ans: Specialised larger epidermal cells seen in the upper epidermis of grass leaves which store water are called as bulliform cells or motor cells. They help in rolling and unrolling of lamina.
Description : What is the role of golgi complex in cell division?
Last Answer : Ans: During cell division the vesicles of Golgi are involved in the formation of cell plate at the equatorial region which eventually forms the middle lamellum. In this way Golgi plays a role in cytokinesis.
Description : In which stage of cell does crossing over occur? What is its role in the origin of species?
Last Answer : Ans: Pachytene of Meiosis. It brings about variations in the off spring. Continuation of these variations for several generations leads to origin of new species.
Description : Role of CFC present in atmosphere is to a) Reduction in ozone b) Ozone formation c) Formation of leg haemoglobin a) Enhance chlorophyll formation.
Last Answer : a) Reduction in ozone
Description : What is the mechanism for motion in plants?
Last Answer : dude, I think this can be googled…. ;-P sorry if i sound like a smart alec….
Description : Why Artificial Organisms Are Reproduced in Non-Flowering Plants ?
Last Answer : As the sexual reproduction of non-flowering plants is not complete, artificial reproduction is done.
Description : Why is the process of perspiration very important for plants ?
Last Answer : As a result of perspiration, the plant gets rid of excess water pressure by expelling water from its body. Perspiration increases the concentration of juice in the cells. Increasing the ... maintains the moisture of the leaves. For this reason perspiration is very necessary for plants.
Description : What do plants leave during photosynthesis ?
Last Answer : Plants release oxygen during photosynthesis.
Description : Teak plants are bred with the help of which ?
Last Answer : Teak plants are propagated by roots.
Description : How do plants absorb water through root hairs ?
Last Answer : Answer : Plants absorb water through unicellular root hairs.
Description : Which of the following works in photosynthesis of plants ?
Last Answer : Chlorophyll works in photosynthesis of plants.
Description : What are the totiptent stem cells of plants ?
Last Answer : : Totiptent stem is the type of cell from which it is possible to produce plant seedlings directly.
Description : What do plants absorb from the environment ?
Last Answer : Plants absorb carbon dioxide from the environment.
Description : Which of the following are true archaebacteria? (1) Extreme halophiles (2) Extreme thermophyles (3) Methanogens (4) Presence of peptidoglycan cell wall Ans. (a) 43; Which of the following are ... plants ? (1) Saintpaulia ionantha (2) Ceratozamia hildae (3) Punica granatum (4) Senecio hadrasomum
Last Answer : Ans. ((c))
Description : Consider the following statements: (1) Cucurbits are monoecious plant (2) In mango, neuter, male and female and female flowers occur together (3) Legumenous plants how unisexuality (4) Oblique septa is found in Rosaceae
Last Answer : Ans. ((b))
Description : Cyanide resistant respiration is characteristic of: (a) Viruses (b) Bacteria (c) Plants (d) Animals
Description : Haploid plants can be obtained from: (a) Leaf culture (b) Bud culture (c) Root culture (d) Anther culture
Description : Golgi apparatus is absent in (a) Higher plants (b) Yeast (c) Bacteria and blue-green algae (d) Liver cells
Description : If a dwarf pea plant was treated with gibberellic acid, it became as tall, as tall pea plants. If these pea plants are crossed with pure tall pea plants, what will be the phenotypic ratio in F1 generation? ... (b) 50% tall and 50% dwarf plants (c) 75% tall and 25% dwarf plants (d) 100% tall plants
Description : Reaction centre of photo system-I in green plants is: (a) P680 (c) P690 (b) P700 (d) P780
Description : The components of an ecosystem are: (a) Trees and weeds (b) Plants and animals (c) Man and plants (d) Biotic and abiotic
Description : First CO2 receptor in C4 plants is: (a) PGA (b) PEP (c) RuBD (d) OAA
Description : Insectivorous plants grow in: (a) Nitrogen rich soil (b) Nitrogen deficient soil (c) Potassium deficient soil (d) Carbohydrate rich soil
Description : Criticize the following statement: Plants carry on photosynthesis; animals carry on respiration instead.
Last Answer : This is an incorrect view. Both plants and animals carry on respiration as a major source of energy for vital functions. Only plants, however, are also capable of carrying out photosynthesis. The ... will determine whether there is a net uptake of O2 or CO2 from a particular plant region.
Description : To obtain haploid plants, we culture _________ e. Entire anther f. Nucleus g. Embryo h. Apical bud
Last Answer : e. Entire anther
Description : The pioneers of succession on terrestrial habitats are a. Higher plants b. Lichens c. Mosses d. Algae
Last Answer : b. Lichens
Description : The most effective agents of bioremediation at ultra level will be a. Plants b. Worms c. Bacteria d. Insects
Last Answer : c. Bacteria
Description : The process where, plants are propagated by seeds, but the embryo is formed by the process in which normal meiosis and syngamy has been eliminated is called
Last Answer : The process where, plants are propagated by seeds, but the embryo is formed by the process in which normal meiosis and syngamy has been eliminated is called – Agamospermy
Description : What is placentation? Describe the various types of placentation in plants.
Last Answer : Ans: It is arrangement of ovules in the ovary. Part of the ovary from which ovules arise is called as placenta. Placentation is of the following types. I. Marginal placentation: Ovules are borne along ... : One or few ovules arise from the base of the unilocular ovary. Ex: Tridax, Helianthus.
Description : What are insectivorous plants and describe the mechanism of insect trapping in Nepenthes.
Last Answer : Ans: Plants that fulfill their nitrogen requirements by digesting the insects are called as insectivorous plants. Nepenthes is commonly called as Pitcher plant. It has petiole whose lower portion is green, ... protein component of insect body which is absorbed by the cells of pitcher.
Description : Name the sub-aerial stem modification seen in free floating aquatic plants. How does it help in vegetative propagation?
Last Answer : Ans: Off-set is the sub-aerial modified stem seen in free floating hydrophytes. It is brittle and has leaves and roots at its only node. When broken accidentally, it is separated from parent plant and can lead independent life.
Description : Which group of Plants are called Amphibians of the plant kingdom and give an example.
Last Answer : Ans: Bryophytes are called as Amphibians of the Plant Kingdom. Example is Funaria.
Description : To which family the petro plants belong and give an example.
Last Answer : Ans: Petro plants belong to family Euphorbiaceae. Example is Jatropa
Description : Name any two plants having sensitive stigmas
Last Answer : Ans: Mimulus, Martynia
Description : Name the two plants of Malvaceae that lack epicalyx.
Last Answer : Ans: Abutilon, Sida
Description : Name two amphibious plants
Last Answer : Ans: Limnophila heterophyllum, Typha
Description : Thermal pollution is more common near a) Hot water springs b) Coal based power plants c) Tropical regions d) Temperate regions.
Last Answer : b) Coal based power plants
Description : Composted manure is produced froma) Farmyard manure and green manure b) Farm refuse and household refuse c) Organic remains of biogas plants d) Rotten vegetables and animal refuse
Last Answer : d) Rotten vegetables and animal refuse
Description : Green manure plants used by farmers mainly belong toa) Compositae b) Leguminosae c) Solanaceae d) Poaceae
Last Answer : b) Leguminosae
Description : Which is not applicable to vegetatively propagated plants a) To get true to type plants b) To protect an elite quality c) To conserve a plant d) To get a new type of plant
Last Answer : d) To get a new type of plant
Description : Layering can be done on plants such as a) Bulbs b) bougainvillea c) Sugar cane d) Oleander
Last Answer : b) bougainvillea
Description : Layering can be done on plants such as a)bulbs b) Lime c) Sugar cane d) Oleander
Last Answer : b) Lime
Description : Advantages of Artificial Methods of Vegetative Reproduction include a) Crops with better quality b) Crops with more yield c) Ability to produce plants with desirable qualities d) All of these
Last Answer : c) Ability to produce plants with desirable qualities