Description : Consider the following statements: 1. Propagation of a nerve impulse in a myelinated nerve fibre is different from that of unmyelinated fibre. 2. The impulse actually travels by leaping through the nodes of Ranvier in an unmyelinated fibre 3. ... incorrect? (a) 1, 2 (b) 1, 3, 4 (c) 2 only (d) 2, 3
Last Answer : Ans:(d)
Description : The parts of stem from which a leaf arises is called a. Node b. Internodes c. Apex d. Bud
Last Answer : Node
Description : The length of different internodes in a culm of sugarcane is variable because of (a) size of leaf lamina at the node below each internode (b) intercalary meristem (c) shoot apical meristem (d) position of axillary buds.
Last Answer : (b) intercalary meristem
Description : Deficiency appears as short internodes in plant.
Last Answer : Ans. N
Description : Which of the following plant organ/s have determinate growth? 1. Dicot leaves and internodes 2. Fruits 3. Grass leaves and internodes 4. Rhizomes and tubers Select the correct answer from the following: (a) 1 and 3 (b) 2 and 4 (c) 1, 2, and 4 (d) 1, 2, 3, and 4
Last Answer : Ans:(c)
Description : Ginger is a stem and not a root because (1) It stores food material (2) It grows horizontally in the soil (3) It has nodes and internodes (4) It lacks chlorophyll
Last Answer : (3) It has nodes and internodes Explanation: Ginger is a modified stem. A rhizome to be exact. A rhizome is a thick horizontally growing stem which usually stores food material. It has nodes ... elongation of the rhizome. Roots develop from the lower surface of the rhizome. Eg. Ginger, Turmeric.
Description : Which one of the following statements is not correct? (a) Offspring produced by the asexual reproduction are called clone. (b) Microscopic, motile, asexual reproductive structures are called zoospores. ( ... in the standing water, drains oxygen from water that leads to the death of fishes.
Last Answer : (c) In potato, banana and ginger, the plantlets arise from the internodes present in the modified stem.
Description : Which one increases in the absence of light? (a) Uptake of minerals (b) Uptake of water (c) Elongation of internodes (d) Ascent of sap
Last Answer : (c) Elongation of internodes
Description : Which meristem is present at the base of the leaves or internodes on twigs? (a) Apical meristem (b) Cambium (c) Intercalary meristem (d) Epidermis
Last Answer : (c) Intercalary meristem
Last Answer : It has nodes and internodes
Description : What is the difference between Sinoatrial node and Atrioventricular node? -Biology
Last Answer : answer:
Description : What is the difference in a nodule and a lymph node?
Last Answer : hyper vascular lymph node
Description : Phase difference between a node and an antinode is A. 90° B. 45° C. 180° D. 360°
Last Answer : 180°
Description : In humans, blood passes from the post caval to the diastolic right atrium of heart due to (a) stimulation of the sino auricular node (b) pressure difference between the post caval and atrium (c) pushing open of the venous valves (d) suction pull.
Last Answer : (b) pressure difference between the post caval and atrium
Description : why is sino atrio node pace maker? -Biology