Description : Stomata that is present on only under surface of leaf.
Last Answer : Ans. Apple and Mulberry type
Description : Name the tiny pores present on the surface of leaves in plants. (1) Pits (2) Stomata (3) Trichomes (4) Hydathodes
Last Answer : (2) Stomata Explanation: Stomata are pores in the surface of the leaf. The pore is surrounded by two guard cells. When these two guard cells take up water, they bend and open up the pore between them.
Last Answer : (2) Stomata Explanation: Stomata are tiny openings or pores in plant tissue that allow for gas exchange. Stomata are typically found in plant leaves but can also be found in some stems.
Last Answer : Stomata
Description : Opening and closing of stomata are due to its
Last Answer : Ans. Turgidity and faccidity
Description : Stomata is found mainly on
Last Answer : Ans. Lower surface of leaves
Description : Mostly widely used pamphlet size
Last Answer : Ans. 12 to 24 pages
Description : A thermal process mostly used for vegetables prior to freezing, drying, or canning in order to soften the texture.
Last Answer : Ans. Blanching
Description : Juices are mostly preserved by
Last Answer : Ans. Freezing
Description : Seed viability is mostly tested by use of
Last Answer : Ans. 2, 3, 5-triphenyl tetrazolium chloride
Description : Clonal selection mostly used in the crop
Last Answer : Ans. Ginger
Description : What does the stomata open? (I) When the guard cells are in flaccid condition (ll) When there is an accumulation of K ions in the guard cells (III) When water enters into the guard cells (IV) When the water potential of ... of adjacent cells (A) II, III and IV I and IV (B) I and III (C) (D) None
Last Answer : (A) II, III and IV
Description : Stomata in bryophytes are present in the of: (a) Capsule (b) Leaf (c) Stem (d) Seta
Last Answer : Ans. ((a))
Description : Anisocytic stomata are present in (A) Senna (B)Digitalis (C) Belladonna (D) Coca
Last Answer : (C) Belladonna
Description : In Pinus plant, stomata are a. Sunken b. Bulged out c. Absent d. Rarely present
Last Answer : a. Sunken
Description : Allelochemicals are mostly present in which of the following plant parts a). Flowers and fruits b). Leaves and stems c). Roots d). All
Last Answer : d). All
Description : What is the function of the stomata in plant leaves?
Last Answer : A: The stomata are responsible for regulating gas exchange (oxygen and carbon dioxide) in and out of the plant.
Description : (a) Leaves of a healthy potted plant were coated with vaseline to block the stomata. Will this plant remain healthy for long? State three reasons for your answer. (b) State any two differences between autotrophic nutrition and heterotrophic nutrition. -Biology
Last Answer : (a) No, this plant will not remain healthy for long. The plant will begin to die because (i) Gaseous exchange will not take place. (ii) No absorption of C02, hence no photosynthesis. (iii) Transpiration will not occur; hence no transportation of water.
Description : Reduced leaves and sunken stomata are the main feature of which thing? -Do You Know?
Last Answer : answer:
Description : During what process of ________, water is lost through the stomata in plant leaves?
Last Answer : transpiration
Description : Leaves of many grasses are capable of folding and unfolding because (1) their mesophyll is not differentiated into palisade and spongy parenchyma (2) they have stomata on both sides of the leaf (3) they have high levels of silica (4) they have specialised bulliform cells
Last Answer : (4) they have specialised bulli-form cells Explanation: Bulliform cells are large, bubbleshaped epidermal cells that occur in groups on the upper surface of the leaves of many grasses. These cells, by their turgor changes, cause rolling and unrolling of the leaves thus regulating water loss.
Description : The exchange of gases takes place in the leaves through these pores for the purpose of photosynthesis. These pores are called – (1) Guard Cells (2) Stomata (3) Chloroplast (4) None of the above
Last Answer : (2) Stomata Explanation: Stomata are tiny pores present on the surface of the leaves via which exchange of gases takes place in the leaves for the purpose of photosynthesis. However, exchange of gases also occurs across the surface of stems, roots and leaves as well.
Description : Stomata open and close due to (a) circadian rhythm (b) genetic clock (c) pressure of gases inside the leaves (d) turgor pressure of guard cells
Last Answer : (d) turgor pressure of guard cells.
Description : Grass leaves curl inwards during very dry weather. Select the most appropriate reason from the following. (a) Tyloses in vessels (b) Closure of stomata (c) Flaccidity of bulliform cells (d) Shrinkage of air spaces in spongy mesophyll
Last Answer : (c) Flaccidity of bulliform cells
Description : Conifers are adapted to tolerate extreme environmental conditions because of (a) broad hardy leaves (b) superficial stomata (c) thick cuticle (d) presence of vessels.
Last Answer : (c) thick cuticle
Description : Reduced leaves and sunken stomata are the main feature of which thing?
Last Answer : Xerophytes
Last Answer : they have specialised bulliform cells
Description : Cereal crops show ‘V’ shaped pale yellowing at lower leaf tips due to deficiency of
Last Answer : Ans. N
Description : Lower most layer of stratified squamous tissue is known as Germinative layer. Reason : lower most layer of stratified tissue is mostly cuboidal in sha
Last Answer : Lower most layer of stratified squamous tissue is known as Germinative layer. Reason : lower most layer ... D. If both Assertion & Reason are false.
Description : Mycorrhizae is associated with the following a) Formation of root nodules b) Hyphae penetrating the soil c) Found mostly in lower plants d) Soil erosion
Last Answer : a) Formation of root nodules
Description : Departmentation by time is one of the oldest forms of departmentation, generally used at lower levels of the organization. Which of the following is not an advantage of departmentation ... results in improved coordination and communication (d) It results in a continuous cycle without interruption
Last Answer : (c) It mostly results in improved coordination and communication
Description : The surface tension of water is at 25°C
Last Answer : Ans. 72.7 dyne/cm2
Description : The attraction of solid surface for water molecules is called as
Last Answer : Ans. Adhesion
Description : The weight of one hectare of surface soil (O-15 cm) in kilograms
Last Answer : Ans. 2.24×10 6 kg/ha
Description : The fine earth covering land surface acts as a reservoir of nutrients and water
Last Answer : Ans. Soil
Description : Which surface has least Albedo?
Last Answer : Ans. Moist black soil
Description : North of the equator, surface winds are known as
Last Answer : Ans. Northeast trade winds
Description : A process of deciding in the present what to do in the future about the best combination of crops and live stock to be raised
Last Answer : Ans. Farm Planning
Description : Present value of future investment is calculated by
Last Answer : Ans. Discounting
Description : Toxic substance present in colocasia
Last Answer : Ans. Ca oxalate
Description : Active ingredient present in Bael
Last Answer : Ans. Marmelosin
Description : Enzyme present in dried latex of papaya
Last Answer : Ans. Pepsin
Description : The Casparian strip is present in
Last Answer : Ans. Endosmosis
Description : The form of DNA present in living organisms
Last Answer : Ans. B-form
Description : The most abundant protein present in the world
Last Answer : Ans. Rubisco