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 : During what process of ________, water is lost through the stomata in plant leaves?
Last Answer : transpiration
Description : Reduced leaves and sunken stomata are the main feature of which thing? -Do You Know?
Last Answer : answer:
Description : The types of stomata mostly present on lower surface of leaves
Last Answer : Ans. Potato type
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 : 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.
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.
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.
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
Last Answer : Stomata
Description : What is the function of the stomata?
Last Answer : A: Stomata are tiny pores found on the leaves of plants that regulate gas exchange, allowing carbon dioxide to enter the leaf for photosynthesis while also allowing oxygen and water vapor to exit.
Last Answer : A: The stomata are small openings on the surface of leaves that allow for gas exchange, specifically the uptake of carbon dioxide for photosynthesis and the release of oxygen and water vapor.
Description : What is the function of guard cells of stomata? -Science-7
Last Answer : Each stoma is surrounded by two guard cells. These guard cells control the opening and closing of stomata.
Description : What is the function of stomata?
Last Answer : Stomata regulate the passage of gasses such as oxygen and carbon dioxide and moisture into and out of the plan
Description : Which among the following parts of a plant is involved in gaseous exchange? (1) Stomata (2) Lenticels (3) Vacuoles (4) Stomata & Lenticels
Last Answer : (4) Stomata & Lenticels Explanation: Plants obtain the gasesthey need through their leaves. They require oxygen for respiration and carbon dioxide for photosynthesis.
Description : In which of the following plant sunken stomata are found? (a) Nerium (b) Hydrilla (c) Mango (d) Guava
Last Answer : (a) Nerium
Description : Which of the following structures is involved in gaseous exchange in woody stem of a plant? (a) Stomata (b) Lenticel (c) Hydathode (d) Epidermis
Last Answer : (b) Lenticel
Description : Through their effects on plant growth regulators, what do the temperature and light control in the plants? (a) Apical dominance (b) Flowering (c) Closure of stomata (d) Fruit elongation
Last Answer : (b) Flowering
Description : Stomata of a plant open due to (a) influx of potassium ions (b) efflux of potassium ions (c) influx of hydrogen ions (d) influx of calcium ions.
Last Answer : (a) influx of potassium ions
Description : In Pinus plant, stomata are a. Sunken b. Bulged out c. Absent d. Rarely present
Last Answer : a. Sunken
Description : (a) Draw a labelled diagram of stomata. List two functions of stomata. (b) What are the raw materials used during photosynthesis? Write chemical equation for photosynthesis. -Biology
Last Answer : Answer.(a) (i) Gaseous exchanges between plant and the atmosphere. (ii) Plant loses water through stomata which helps in movement of minerals from soil to leaves. (b) Raw materials for ... getting average light of 10-12 hrs a day. The chemical equation for photosynthesis is as follows:
Description : (a) “The breathing cycle is rhythmic whereas exchange of gases is a continuous process”. Justify this statement. (b) What happens if conducting tubes of circulatory system develops a leak? State in brief, how could this be avoided? (c) How opening and closing of stomata takes place? -Biology
Last Answer : (a) The breathing cycle involves inhalation and exhalation of air due to alternate expansion and contraction of thoracic cavity. Thus it is a rhythmic process. But exchange of gases is a continuous process ... pore opens up. When water moves out the guard cells shrinks and the stomatal pore closes.
Description : (a) Draw a diagram to show open stomatal pore and label on it: (i) guard cells (ii) chloroplast (b) State two functions of stomata. (c) How do guard cells regulate the opening and closing of stomatal pore? -Biology
Last Answer : (a) (b) Two functions of stomata are: (i) Exchange of gases between the plant and the atmosphere takes place through stomata. (ii)Transpiration in plants takes place through stomata. ( ... through these stomata, the plant closes these pores when it does not require carbon dioxide for photosynthesis.
Description : What are stomata? -Biology
Description : Where do we find stomata? -Biology
Description : What are the functions of stomata? -Biology
Description : How do plants respiration occur at night as stomata are closed? -Biology
Description : Difference between lenticels and stomata. -Biology
Description : Similarities between lenticels and stomata. -Biology
Description : Stomata and mesophyll cells gas exchange? -Biology
Description : when both stresses (water and heat) comes at the same time then what happens to stomata? -Biology
Description : What is stomata ?
Last Answer : There are many small holes on the surface of the leaves of the tree , these are called stomata.
Description : Phytohormore connected with closing of stomata is
Last Answer : Phytohormore connected with closing of stomata is A. ABA B. Kinetin C. GA D. IBA
Description : Water stress causes stomata to (A)____ hence reducing the (B)_____ availability.
Last Answer : Water stress causes stomata to (A)____ hence reducing the (B)_____ availability.
Description : Which of the following have sunken stomata
Last Answer : Which of the following have sunken stomata A. Nerium B. Mangifera C. Hydrilla D. Zea mays
Description : In most plants stomata on a leaf must be during open the Calvin-Benson cycle.?
Last Answer : Need answer
Description : What is able to diffuse through the stomata?
Description : If you forgot to water a houseplant for a few days would the stomata be open or closed?
Description : Why might stomata be referred to as necessary evil?
Last Answer : What is the answer ?