Description : Structural characteristics of meristematic cells near root tip. -Biology
Last Answer : answer:
Description : Plants absorb most of the water needed by them through their (a) Embryonic zone (b) Growing point (c) Root hairs (d) Zone of elongation
Last Answer : Ans:(c)
Description : Structural characteristics of Cancer cells. -Biology
Description : Which of the following control the root initiation, cell elongation and apical dominance? (A)Auxins (B) ABA (C) Gibberellins (D) Ethylene
Last Answer : (D) Ethylene
Last Answer : (B) ABA
Description : Gibberellins promote (a) seed germination (b) seed dormancy (c) leaf fall (d) root elongation.
Last Answer : (c) leaf fall
Description : Abscisic acid causes (a) stomatal closure (b) stem elongation (c) leaf expansion (d) root elongation.
Last Answer : (a) stomatal closure
Description : ABA is involved in (a) shoot elongation (b) increased cell division (c) dormancy of seeds (d) root elongation.
Last Answer : (d) root elongation.
Description : Root hair develop from the region of (a) elongation (b) root cap (c) meristematic activity (d) maturation.
Last Answer : (d) maturation.
Description : Root hairs develop from the region of : (1) Elongation (2) root cap (3) Meristematic activity (4) Maturation
Last Answer : (4) Maturation
Description : In eukaryotic cells (A) Formylated tRNA is important for initiation of translation (B) Cyclohexamide blocks elongation during translation (C) Cytosolic ribosomes are smaller than those found in prokaryotes (D) Erythromycin inhibits elongation during translation
Last Answer : Answer : B
Description : What causes a green plant exposed to the light, on only one side, to bend towards the source of light as it grows? (a) Light stimulates plant cells on the lighted side to grow ... Green plants need light to perform photosynthesis. (d) Green plants seek light because they are phototropic.
Last Answer : (b) Auxin accumulates on the shaded side, stimulating greater cell elongation there
Description : Explain meristematic zone of a root. -Biology
Description : The flow chart below indicates the hierarchical levels of the Linnaean classification system.Which of the following organisms most likely share the most structural characteristics?
Last Answer : The flow chart below indicates the hierarchical levels of the Linnaean classification system. Organism A, Organism B, and Organism C are all classified within the Phylum Chordata. Organism A and Organism B ... another than they do with Organism A. D. Organism A and Organism B share more structura
Description : Match List-I (Type of Unemployment) with List-II (Characteristics) and select the correct answer using the codes given below: L ist-I L ist -I I (Type of (Char acter ist ics) Unem ... contribution by the additional labour is nil E. Cyclical V. Job opportunities during certain months in the year
Last Answer : (1) A-V, B-III, C-IV, D-II, E-I
Description : Which plant hormone causes cell elongation? -Biology
Description : The water, that moves downward freely under the influence of gravity (< 1/3 bar) beyond the root zone
Last Answer : Ans.Gravitational water
Description : Downward movement of nutrients and salts from the root zone with the water
Last Answer : Ans.Leaching
Description : . Is not an advantage of this system of irrigation (Drip). a. Water application efficiency is high. b. Recycled non-portable water can be safely used. c. Moisture within the root zone can be maintained. d. Initial cost is more than overhead syste
Last Answer : d. Andhra Pradesh
Description : Is not an advantage of this system of irrigation (Drip). a. Water application efficiency is high. b. Recycled non-portable water can be safely used. c. Moisture within the root zone can be maintained. d. Initial cost is more than overhead s
Last Answer : d. Initial cost is more than overhead systems.
Description : Maximum root zone depth for Maize (a) 200-300 mm (b) 400-600 mm (c) 500-600 mm (d) 350- 450 mm
Last Answer : (b) 400-600 mm
Description : In case of water logged lands a. The soil ports are saturated within a depth of 1 m b. The soil ports are situated within a depth of 60 cm c. The soil ports are situated within a depth of 40 cm b. D.The soil ports are saturated up to the root zone of the crop
Last Answer : D.The soil ports are saturated up to the root zone of the crop
Description : The _______ is a server whose zone consists of the whole tree. A. domain server B. zone server C. root server D. none of the above
Last Answer : C. root server
Description : Reclamation of saline soil which of the following practice is followed ? — a. Adequate drainage b. By good quality irrigation water c. Leaching of salts below root zone d. All of these
Last Answer : d. All of these
Description : A land is known as waterlogged (A) When the permanent wilting point is reached (B) When gravity drainage has ceased (C) Capillary fringe reaches the root zone of plants (D) None of the above
Last Answer : Answer: Option C
Description : It Is used for deep tillage and penetration of soil for storage for rain water in crop root zone. b. Disc plough c. Mould board plough d. None of the above
Last Answer : Ans- a. Chisel plough
Description : The animals in which cells are organized into structural and functional units called as tissues, organs, and organ system are grouped under which subk
Last Answer : The animals in which cells are organized into structural and functional units called as tissues, ... Parazoa B. Eumetazoa C. Metazoa D. Bilateria
Description : Which of the following statement(s) is/are true concerning the proliferative phase of wound healing? a. The macrophage is the predominant cell type b. The pink or purple-red appearance of a wound ... amino acids, hydroxyproline and hydroxylysine d. The predominant collagen type in a scar is type 3
Last Answer : Answer: b, c The proliferative phase of wound healing begins with the formation of a provisional matrix of fibrin and fibronectin as part of the initial clot formation. Initially, the provisional ... The principal collagen type scar is type 1, with lesser amounts of type 3 collagen also present
Description : A high surface area to volume ratio in cells is important because it (a) Enables efficient transfer of wastes, nutrients and gases across the cell membrane (b) Prevents overproduction of cell ... self and non-self (d) Provides for better structural support to cope with external physical pressure
Last Answer : Ans:(a)
Description : Cell theory includes all of the following except A.all organisms are composed of one or more cells B.the cell is the most primitive form of life C.the cell is the structural unit of life D.cells arise by division of preexisting cells
Last Answer : B.the cell is the most primitive form of life
Description : Cell theory includes all of the following except A- .all organisms are composed of one or more cells B- the cell is the most primitive form of life C- .the cell is the structural unit of life D- cells arise by division of preexisting cells
Last Answer : the cell is the most primitive form of life
Description : Reappearance of nuclear membrane & nucleolus along with thining & elongation in chromosomes are diagnostic characters for the phase:-
Last Answer : Reappearance of nuclear membrane & nucleolus along with thining & elongation in chromosomes are diagnostic ... B. Metaphase C. Interphase D. Telophase
Description : Assuming that a planet goes round the sun in a circular orbit of radius `0.5AU` determine the angle of maximum elongation for the planet and its dista
Last Answer : Assuming that a planet goes round the sun in a circular orbit of radius `0.5AU` determine ... its distance from the earth when elongation is measured.
Description : Elongation of a peptide chain involves all the following except (A) mRNA (B) GTP (C) Formyl-Met-tRNA (D) Tu, TS and G factors
Last Answer : Answer : C
Description : Nonsense codons bring about (A) Amino acid activation (B) Initiation of protein synthesis (C) Termination of protein synthesis (D) Elongation of polypeptide chains
Description : Translocase is an enzyme required in the process of (A) DNA replication (B) RNA synthesis (C) Initiation of protein synthesis (D) Elongation of peptides
Last Answer : Answer : D
Description : The formation of a peptide bond during the elongation step of protein synthesis results in the splitting of how many high energy bonds? (A) 1 (B) 2 (C) 3 (D) 4
Description : Peptidyl transferase activity is located in (A) Elongation factor (B) A charged tRNA molecule (C) Ribosomal protein (D) A soluble cytosolic protein
Description : In the process of elongation of chain binding of amino acyl tRNA to the A site requires (A) A proper codon recognition (B) GTP (C) EF-II (D) GDP
Last Answer : Answer : A
Description : Epinephrine increases the concentration of free fatty acids in plasma by increasing (A) Extramitochondrial fatty acid synthesis (B) Mitochondrial fatty acid chain elongation (C) Microsomal fatty acid chain elongation (D) Lipolysis in adipose tissue
Description : All the following statements about acetyl CoA carboxylase are true except (A) It is required for de novo synthesis of fatty acids (B) It is required for mitochondrial elongation of fatty acids ( ... for microsomal elongation of fatty acids (D) Insulin converts its inactive form into its active form
Description : The major site for elongation of medium chain fatty acids is (A) Mitochondria (B) Cytosol (C) Microsomes (D) All of these
Description : The desaturation and chain elongation system of polyunsaturated fatty acid are enhanced by (A) Insulin (B) Glucagon (C) Epinephrine (D) Thyroxine
Description : Chain elongation of fatty acids in mammalian liver occurs in (A) Nucleus (B) Ribosomes (C) Lysosomes (D) Microsomes
Description : Chain elongation of fatty acids occurring in mammalian liver takes place in which of the following subcellular fractions of the cell? (A) Nucleus (B) Ribosomes (C) Lysosomes (D) Microsomes
Description : The desaturation and chain elongation system of polyunsaturated fatty acids are greatly diminished in the absence of (A) Insulin (B) Glycagon (C) Epinephrine (D) Thyroxine
Description : C22 and C24, fatty acids required for the synthesis of sphingolipids in brain are formed by (A) De novo synthesis (B) Microsomal chain elongation (C) Mitochondrial chain elongation (D) All of these
Description : Colchicines bring about: (a) Polyploidy (b) Cell division (c) Cell elongation (d) Cell differentiation
Last Answer : Ans. ((a))
Description : If percentage elongation of a material is more than 200%, it is classed as ?
Last Answer : Rubber.