Description : Select the correct statement: (a) Legumes are incapable of fixing nitrogen (b) Legumes fix nitrogen through bacteria living in fruits root (c) Legumes fix nitrogen only by bacteria present in nodules (d) None of the above
Last Answer : Ans. (c)
Description : Root nodules are commonly found in – (1) Parasitic plants (2) Epiphytic plants (3) Leguminous plants (4) Aquatic plants
Last Answer : (3) Leguminous plants
Description : Root nodules are commonly found in : (1) Parasitic plants (2) Epiphytic plants (3) Leguminous plants (4) Aquatic plants
Last Answer : Leguminous plants
Description : All of the following statements concerning the actinomycetous filamentous soil bacterium Frankia are correct except that Frankia (a) can induce root nodules on many plant species (b) can fix ... its host plant through root hair deformation and stimulates cell proliferation in the host's cortex
Last Answer : (b) can fix nitrogen in the free-living state
Description : $ Leghaemoglobin is a compound of Iron and is present in the root nodules of leguminous plants. ! It acts as an oxygen scavenger and forms a temporary
Last Answer : $ Leghaemoglobin is a compound of Iron and is present in the root nodules of leguminous plants. ! It acts ... is wrong D. If both As and R are wrong.
Description : The product(s) of reaction catalysed by nitrogenase in root nodules of leguminous plants is/are (a) ammonia alone (b) nitrate alone (c) ammonia and oxygen (d) ammonia and hydrogen.
Last Answer : (d) ammonia and hydrogen.
Description : Nitrogen fixing bacteria found in the root nodules of leguminous plant is:- (1) Saprophytic (2) Parasitic (3) Symbiotic (4) Autotrophic
Last Answer : (3) Symbiotic Explanation: Many legumes have root nodules that provide a home for symbiotic nitrogenfixing bacteria called rhizobia. This relationship is particularly common in nitrogen-limited conditions. .
Description : Match column I with column II and select the correct option using the codes given below. Column I Column II A. Pistils fused together (i) Gametogenesis B. Formation of gametes (ii) Pistillate C. Hyphae of higher (iii) Syncarpous ascomycetes D ... , C-(iv), D-(iii) (d) A-(iii), B-(i), C-(iv), D-(ii)
Last Answer : (d) A-(iii), B-(i), C-(iv), D-(ii)
Description : The process by which nutrient chemicals or contaminants are dissolved and carried away by water, or are moved into a lower layer of soil a) Mulching b) Desertification c) Incineration d) Leaching
Last Answer : d) Leaching
Description : In Angiosperms, during pollination, the pollen grains are mostly
Last Answer : In Angiosperms, during pollination, the pollen grains are mostly – Bicellular
Description : How do plants absorb water through root hairs ?
Last Answer : Answer : Plants absorb water through unicellular root hairs.
Description : Haploid plants can be obtained from: (a) Leaf culture (b) Bud culture (c) Root culture (d) Anther culture
Last Answer : Ans. ((d))
Description : Root suckers are a) Insects that suck nutrients from the roots of plants b) Shoots that arise from roots to form new plant c)New plant parts that arise from the branches of fruit trees d) Roots of neighboring plants that share water with the another plant
Last Answer : b) Shoots that arise from roots to form new plant
Description : The terms mycelium and hyphae are associated with A- algae B- fungi C- protozoa D- viruses
Last Answer : fungi
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
Description : Decot root having more than six vascular bundles are found in (a) Pea (b) Sunflower (c) Ficus (d) Ranunculus
Last Answer : Ans. ((c))
Description : Root cap is not found n: (a) Mesophytes (c) Hydrophytes (b) Xerophytes (d) Halophytes
Description : Consider the following statements: The genetic code said to be degenerate and universal which means that, (1) Amino afids may have more than one codon (2) All amino acids have mo than one codon (3) Codons are common for higher and lower organism (4) Codons are not found in bacteria
Description : What do mycorrhizae get from the plants? -Biology
Last Answer : answer:
Description : How do mycorrhizae benefit plants? -Biology
Description : Insectivorous plants grow in: (a) Nitrogen rich soil (b) Nitrogen deficient soil (c) Potassium deficient soil (d) Carbohydrate rich soil
Last Answer : Ans. ((b))
Description : Study the given figure which shows the development of root nodules in soyabean. Match the correct explanation and find the correct sequence for labell
Last Answer : Study the given figure which shows the development of root nodules in soyabean. Match the ... Curling of root hair due to successful infection.
Description : Nitrogen fixation in root nodules of Alnus is brought about by (a) Frankia (b) Azorhizobium (c) Bradyrhizobium (d) Clostridium
Last Answer : (a) Frankia
Description : The function of leghaemoglobin in the root nodules of legumes is (a) inhibition of nitrogenase activity (b) oxygen removal (c) nodule differentiation (d) expression of nif gene.
Last Answer : b) oxygen removal
Description : Which two distinct microbial processes are responsible for the release of fixed nitrogen as dinitrogen gas (N2) to the atmosphere? (a) Aerobic nitrate oxidation and nitrite reduction (b) ... fixation by Rhizobium in root nodules of legumes (d) Anaerobic ammonium oxidation and denitrification
Last Answer : (d) Anaerobic ammonium oxidation and denitrification
Description : When the nurse assesses the patient and observes blue-red and dark brown plaques and nodules, she recognizes that these manifestations are associated with a) Kaposi's sarcoma. Kaposi's sarcoma is ... syphilis. A painless chancre or ulcerated lesion is a typical finding in the patient with syphilis.
Last Answer : a) Kaposi’s sarcoma. Kaposi’s sarcoma is a frequent comorbidity of the patient with AIDS.
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
Description : Consider the following statement: (1) In plant cells, cytokinesis start with the formation of the phragmoplast (2) Phragmoplast comprises intrazonal microtubules and Golgi vesicles (3) Primary cell wall is produced by microtubules (4) Phragmoplast is formed by nucleus
Last Answer : Ans. ((a))
Description : The formation of multivalents at meiosis in diploid organism is due to: (a) Monosomy (b) Delection (c) Inversion (d) Reciprocal translocation
Description : Colchicines prevent the spindle formation during: (a) Prophase (b) Metaphase (c) Anaphase (d) Telophase
Description : In angiosperm, triple fusion is necessary for the formation of: (a) Embryo (b) Pollen (c) Endosperm (d) Leaf
Description : Pyrenoids are the centers for formation of: (a) Proteins (b) enzymes (c) Fat (d) Starch
Description : Formation of diploid embryosac from diploid vegetative structure, e.g., nucellus or integument etc., without meiosis is called: (a) Apospory (b) Apomixis (c) Diplospory (d) Adventives polyembryony
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
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 : The formation of laterite soil is mainly due to: (a) weathering (b) erosion (c) leaching (d) deposition
Last Answer : Ans: (c)
Description : The processes of ............ and .........go on simultaneously and generally there is a balance between the two ? (a) Denudation and erosion (b) Soil formation and erosion (c) Soil formation and denudation (d) Climatic conditions and soil erosion
Last Answer : (b) Soil formation and erosion
Description : What is the upper part of the embryonic root called ?
Last Answer : The upper part of the embryonic root is called the hypocotyl.
Description : Which hormone is applied to the root of a plant ?
Last Answer : Auxin hormone is applied to the root of the plant.
Description : Which of the following propagates through the root ?
Last Answer : Patal propagated through roots.
Description : What kind of radish root ?
Last Answer : Radish ( Raphanus raphanistrum subsp. sativus) is a staple vegetable.
Description : What if the tip of the root swells with food ?
Last Answer : When the tip of the root is swollen by storing food, it is called kandal.
Description : What is the non-transplanted root of bot tree ?
Last Answer : The non-transformational root of the bot tree is the columnar root
Description : In onion, the swollen underground structure is: (a) Root (b) Rhizome (c) Bulb (d) Tuber
Description : Development of shoot and root is determined by: (a) Cytokinin and auxin ratio (b) Enzymes (c) Temperature (d) Plant nutrients
Description : Primary root is: (1) Positively geotropic (2) Positive hydrotropic (3) Negative geotropic (4) Negative hydrotropic
Description : Root of L.oldhamia is called as…. a) Sphenopteris hoeninghausii b)Kaloxylon hookeri c)Lagenostoma lomaxii d)Rachiopteris aspera
Last Answer : b)Kaloxylon hookeri
Description : Sphenopteris hoeninghausii is the….. a)stem b)root c)leaves d)ovule
Last Answer : c)leaves
Description : In roots, mitotically and metabolically inactive cells that are positioned just behind the root cap are called as
Last Answer : In roots, mitotically and metabolically inactive cells that are positioned just behind the root cap are called as – Quiescent center
Description : Root apical meristem is best explained by
Last Answer : Root apical meristem is best explained by – Histogen theory