Description : Which of the following is not a stern modification? (1) Bulb of Onion (2) Corm of Arvi (3) Tuber of Sweet-potato (4) Tuber of Potato
Last Answer : (3) Tuber of Sweet-potato Explanation: A modified stem is a part of a plant with special features developed for special functions. Modified stems can be found either above or below ground. Examples of ... ; bulbs, corms, rhizomes, tubers and tendrils. Sweet potato is an example of a tuberous root.
Description : Onion and garlic are examples of a)Rhizome b) corm c) stem tuber d) bulb
Last Answer : d) bulb
Description : Stem is reduced in (a) Rhizome (b) Corm (c) Bulb (d) Tuber
Last Answer : Ans. ((c))
Description : A common example of stem tuber is a) Ginger b) Garlic c) Onion d) Potato
Last Answer : d) Potato
Description : The edible part of potato is: a. Root b. Tuber c. Rhizome d. Corm
Last Answer : Tuber
Description : In onion, the swollen underground structure is: (a) Root (b) Rhizome (c) Bulb (d) Tuber
Description : Why is potato tuber considered as a stem although it is an underground plant part? -Biology
Last Answer : answer:
Description : Ginger and sweet potato are (a) Homologous (b) Stem and roots respectively (c) Analogous (d) Both (b) and (c)
Last Answer : Ans:(d)
Description : Which of these is a modified underground stem? (1) Radish (2) Carrot (3) Sweet Potato (4) Potato
Last Answer : (4) Potato Explanation: Underground stems are modified plant structures that derive from stem tissue but exist under the soil surface. Seedlings develop two structures or axes of growth, one ... structures that develop downward which are called roots. Potato is such a modified underground stern.
Description : Which one of the following is a modified stem? (1) Carrot (2) Sweet potato (3) Coconut (4) Potato
Last Answer : (4) Potato Explanation: Some plant species have modified stems that are especially suited to a particular habitat and environment.
Description : Sweet potato is propagated by: a. Stem cuttings b. Tubers c. Roots d. a & b
Last Answer : a & b
Description : An example of edible underground stem is (a) carrot (b) groundnut (c) sweet potato (d) potato.
Last Answer : (d) potato.
Description : Sweet potato is a modified (a) stem (b) adventitious root (c) tap root (d) rhizome.
Last Answer : (b) adventitious root
Description : Sweet potato is a modified (1) Stem (2) Adventitious root (3) Tap root (4) Rhizome
Last Answer : (2) Adventitious root
Last Answer : Potato
Description : An edible underground stem is (1) Ginger (2) Sweet-potato (3) Sugarcane (4) Radish
Last Answer : Ginger
Description : The type of crop which is able to fix nitrogen from air is known as (a) Legume (b) Rice (c) Tuber (d) Potato
Last Answer : Ans: (a)
Description : The tuber borne disease of potato
Last Answer : Ans. Black scurf (Rhizoctonia solani)
Description : The scientific name of Potato tuber moth
Last Answer : Ans. Phthorimaea operculella
Description : Tuber for selected for potato sowing should have
Last Answer : Ans.At least 3 buds, 2.5-3 cm diameter with 25-30 gm weight.
Description : A potato tuber has been cut into two halves. A few drops of iodine solution are placed on the cut surface of one of the halves. What colour change will be noticed? (1) From brown to blue-black (2) From brown to orange-red (3) From blue to pink (4) From pink to blue-green
Last Answer : (1) From brown to blueblack Explanation: Any form of starch (carbohydrate) turns blue-black when iodine solution is applied to it. This is because starch is composed of polymers of ... already mentioned. The complex of iodine stuck inside the amylose coil produces a characteristic blueblack colour.
Description : potato tuber has been cut into two halves. A few drops of iodine solution are placed on the cut surface of one of the halves. What colour change will be noticed? (1) From brown to blue-black (2) From brown to orange-red (3) From blue to pink (4) From pink to blue-green
Last Answer : (1) From brown to blueblack Explanation: The Iodine test is used to test for the presence of starch. Iodine solution — iodine dissolved in an aqueous solution of potassium iodide — reacts with the starch producing a purple black colour.
Description : Green potato tuber is inedible due to: a. Carcinogenic b. Hardness c. Hollowness d. None of above
Last Answer : Carcinogenic
Description : Potato cut tuber are used for planting during a. Autumn crop b. Spring crop c. Both of above d. None of above
Last Answer : Spring crop
Description : Tuber initiation in potato starts after a. 7 th week b. 9 th week c. 5 th week d. 4 th week
Last Answer : 7 th week
Description : Optimum temperature for potato tuber formation is a. 20-22°C b. 25-30°C c. 22-25°C d. All of these
Last Answer : 20-22°C
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 : Damaging stage of potato tuber month is –a) Adult b) Pupa c) Larva d) All of these
Last Answer : c) Larva
Description : The “eyes” of the potato tuber are (a) root buds (b) flower buds (c) shoot buds (d) axillary buds.
Last Answer : (d) axillary buds.
Description : Which hormone breaks dormancy of potato tuber? (a) Gibberellin (b) IAA (c) ABA (d) Zeatin
Last Answer : (a) Gibberellin
Description : Herbicide which increase tuber size be sides weed control in potato a). EPTC b). Fluchloralin c). Pendimethalin d). Atrazine
Last Answer : a). EPTC
Description : A potato tuber has been cut into two halves. A few drops of iodine solution are placed on the cut surface of one of the halves. What colour change will be noticed? (1) From brown to blue–black (2) From brown to orange–red (3) From blue to pink (4) From pink to blue–green
Last Answer : From brown to blue–black
Last Answer : From brown to blue-black
Description : Difference between Root tuber and Stem tuber? -Biology
Description : How is plant propagated by stem tuber? -Biology
Description : Is rotundifolius a root tuber or stem tuber? -Biology
Description : A slender trailing stem taking roots at the node is a. Runner b. Rhizome c. Tuber d. Bulbs
Last Answer : Runner
Description : The example of above ground modified stem is a. stolons b. Corms c. Tuber d. Rhizome
Last Answer : stolons
Description : Where was India's first rocket launching station set up? (a) Sriharikota (b) Arvi (c) Thumba (d) Port Blair
Last Answer : Ans: (c)
Description : Where was India's rocket launching station set up? (a) Sriharikota (b) Arvi (c) Thumba (d) Port Blair
Description : Where is Arvi earth station for satellite communication? (a) Uttar Pradesh (b) Tamil Nadu (c) Maharashtra (d) Gujarat
Last Answer : Ans: (d)
Description : $ Phylloclade is a stem modification. ! There are present flowers on these.
Last Answer : $ Phylloclade is a stem modification. ! There are present flowers on these. A. If both As and R are ... is wrong D. If both As and R are wrong.
Description : Which of the following is not a stem modification? (a) Tendrils of cucumber (b) Flattened structures of Opuntia (c) Pitcher of Nepenthes (d) Thorns of citrus
Last Answer : (c) Pitcher of Nepenthes
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 aerial stem modification is concerned with vegetative propagation? Give two examples.
Last Answer : Ans: Bulbils. Ex: Agave americana, Dioscoria bulbifera
Description : Which underground stem modification does not possess roots? Mention its scientific name.
Last Answer : Ans: Stem tuber is the underground stem modification that does not possess roots. Solanum tuberosum is its scientific name.
Description : Bulb production in onion is dependent upon: a. Temperature b. Soil moisture c. Day length d. All of above
Last Answer : Day length
Description : Which one of the following is correctly matched? (a) Onion–Bulb (b) Ginger–Sucker (c) Chlamydomonas–Conidia (d) Yeast–Zoospores
Last Answer : (a) Onion–Bulb