(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

(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
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(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 as it takes place between the blood and each and every cell, by diffusion. (b) The circulatory system will become inefficient if it develops a leak. This could be avoided by maintaining a normal blood pressure. (c) When water flows into the guard cells, the guard cells swell and the stomatal pore opens up. When water moves out the guard cells shrinks and the stomatal pore closes.
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Related questions

Opening and closing of stomata is due to the (a) hormonal change in guard cells (b) change in turgor pressure of guard cells (c) gaseous exchange (d) respiration.

Description : Opening and closing of stomata is due to the (a) hormonal change in guard cells (b) change in turgor pressure of guard cells (c) gaseous exchange (d) respiration.

Last Answer : (b) change in turgor pressure of guard cells

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Last Answer : (a) (b) Quantity of dissolved oxygen is fairly low in water as compared to the amount of oxygen in air. Aquatic organisms therefore have to breath faster than terrestrial organisms to absorb the required amount of oxygen from the water.

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Opening and closing of stomata are due to its

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Last Answer : Ans. Turgidity and faccidity

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Last Answer : (a) C - Alveoli - Thin walled vascular bag like structures for exchange of gases.

Closing rate is the exchange rate at the close of the date on which a transaction takes place

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Last Answer : FALSE

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Last Answer : What is the difference between octopuses and mussels regarding their circulatory systems?

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Last Answer : Ans:(c)

How exchange of gases takes place in terrestrial animals?

Description : How exchange of gases takes place in terrestrial animals? 

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The exchange of gases in the alveoli of the lungs takes place by (a) passive transport (b) active transport (c) osmosis (d) simple diffusion.

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Last Answer : (b) A : Alveolar cavity - Main site of exchange of respiratory gases

Phytohormore connected with closing of stomata is

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Kaolin is — type antitranspirant a. Stomata closing b. film forming c. Reflecting type d. Growth retardants

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The rhythmic rise and fall of ocean water twice in a day called – (1) Tide (2) Ocean current (3) Wave (4) Water cycle

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What are opening in the bark that allows the exchange of gases?

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Stomata and mesophyll cells gas exchange? -Biology

Description : Stomata and mesophyll cells gas exchange? -Biology

Last Answer : answer:

Stomata and mesophyll cells gas exchange? -Biology

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Last Answer : answer:

Micropyle is an opening in a. Stomata b. Seed c. Ovary d. Flower

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Glycolate induces opening of stomata in (a) presence of oxygen (b) low CO2 concentration (c) high CO2 (d) CO2 absent.

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Cash flow statement is prepared by taking the ------------- balance of cash a) Opening balance b) Closing balance c) Monthly balance d) Others

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Which of the following statement is true? (a) Value added = total sales + closing stock of finished goods – opening stock of finished goods – total expenditure on raw material – intermediate goods (b) Value added = total sales + closing stock of finished goods and semi finished goods – total expenditure on raw material – intermediate goods (c) Value added = total sales + closing stock of finished goods and semi-finished goods-opening stock of finished goods and semi finished goods-total expenditure on raw material (d) Value added = total sales + closing stock of finished goods and semi finished goods – opening stock of finished goods and semi finished goods – total expenditure on raw material – intermediate goods.

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Last Answer : (d) Value added = total sales + closing stock of finished goods and semi finished goods – opening stock of finished goods and semi finished goods – total expenditure on raw material – intermediate goods.

Which process controls the opening and closing of the pores ?

Description : Which process controls the opening and closing of the pores ?

Last Answer : The percolation process controls the opening and closing of the pores.

Process B had no opening inventory. 13,500 units of raw material were transferred in at Rs 4.50 per unit. Additional material at Rs1.25per unit was added in process. Labour and overheads were Rs 6.25 per completed unit and Rs 2.50 per unit incomplete. If 11,750completed units were transferred out, what was the closing inventory in Process B? (a) Rs. 6562.50 (b) Rs. 12,250.00 (c) Rs. 14,437.50 (d) Rs. 25,375.00

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Last Answer : (a) Rs 142,485

6. Budgeted sales of X for March are 18000 units. At the end of the production process for X, 10% of production units are scrapped as defective. Opening inventories of X for March are budgeted to be 15000 units and closing inventories will be 11,400 units. All inventories of finished goods must have successfully passed the quality control check. The production budget for X for March, in units is:

Description : 6. Budgeted sales of X for March are 18000 units. At the end of the production process for X, 10% of  production units are scrapped as defective. Opening inventories of X for March are ... have successfully  passed the quality control check. The production budget for X for March, in units is:

Last Answer : (d) 16,000

Which one of the following is a possibility for most of us in regard to breathing, by making a conscious effort? (a) One can breathe out air totally without oxygen. (b) One can breathe out air through Eustachian tube by closing both nose and mouth. (c) One can consciously breathe in and breathe out by moving the diaphragm alone, without moving the ribs at all. (d) The lungs can be made fully empty by forcefully breathing out all air from them

Description : Which one of the following is a possibility for most of us in regard to breathing, by making a conscious effort? (a) One can breathe out air totally without oxygen. (b) One can breathe out air ... ribs at all. (d) The lungs can be made fully empty by forcefully breathing out all air from them

Last Answer : (b) One can breathe out air through Eustachian tube by closing both nose and mouth

In the guidance of learning a teacher has many important roles. Which one of the following is the least important aspect of the teachers’ role in the guidance of learning? Options: A) The provision of continuous diagnostic and remedial help. B) The forestalling of habits. C) The provision of encouragement and moral support. D) The development of insight into what constitute the pitfalls and danger to be avoided.

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Which is the most important aspect of the teacher’s role in learning? Options: A) The development of insight into what constitutes an adequate performance B) The development of insight into what constitutes the pitfalls and dangers to be avoided C) The provision of encouragement and moral support D) The provision of continuous diagnostic and remedial help

Description : Which is the most important aspect of the teacher's role in learning? Options: A) The development of insight into what constitutes an adequate performance B) The development of insight ... The provision of encouragement and moral support D) The provision of continuous diagnostic and remedial help

Last Answer : A) The development of insight into what constitutes an adequate performance 

Which of the following is the least important aspect of the teacher's role in the guidance of learning? Options: A) The development of insight into what constitutes an adequate performance B) The development of insight into what constitute the pitfalls and dangers to be avoided C) The provision of continuous diagnostic and remedial help D) The fore-stalling of habits

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Last Answer : B) The development of insight into what constitute the pitfalls and dangers to be avoided

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Description : Which is the most important aspect of the teacher's role in learning? (A) The development of insight into what constitutes an adequate performance (B) The development of insight into ... The provision of encouragement and moral support (D) The provision of continuous diagnostic and remedial help

Last Answer : (C) The provision of encouragement and moral support

Which of the following statement(s) is/are true concerning the pathophysiology of gas exchange? a. Hypoventilation in relation to perfusion can result in an oxygen saturation of less than 100% b. Diffusion block and / mismatch can almost completely be overcome by breathing 100% oxygen c. Transpulmonary shunting does not occur under normal circumstances d. The normal arterial oxygen saturation should be 100%

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Sonia contracts with Anshul to buy a necklace, believing it is made of pearls whereas in fact it is made of imitation pearls of no value. Anshul knows that Sonia is mistaken and takes no steps to correct the error. Now Sonia wants to cancel the contract on the basis of fraud. Which of the following statement is correct? A. Sonia can cancel the contract alleging fraud B. Sonia cannot cancel the contract C. Sonia can cancel the contract alleging undue influence D. Sonia can claim damages

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Last Answer : B. Sonia cannot cancel the contract

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Description : List any four methods of plotting a compass traverse survey & explain any one in brief. Also state the meaning of adjustment of closing error of traverse.

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What are the three types of respiration in which the circulatory system transports gases?

Description : What are the three types of respiration in which the circulatory system transports gases?

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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

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Explain the mechanism of stomatal opening and closing. -Biology

Description : Explain the mechanism of stomatal opening and closing. -Biology

Last Answer : answer:

Pick up the incorrect statement (A) The cross-sectional area of the welded member is effective (B) A welded joint develops strength of its parent metal (C) Welded joints provide rigidity (D) Welding takes more time than riveting

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Which among the following parts of a plant is involved in gaseous exchange? (1) Stomata (2) Lenticels (3) Vacuoles (4) Stomata & Lenticels

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.

Which of the following structures is involved in gaseous exchange in woody stem of a plant? (a) Stomata (b) Lenticel (c) Hydathode (d) Epidermis

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Which of the following statements is not true for stomatal apparatus? (a) Guard cells invariably possess chloroplasts and mitochondria. (b) Guard cells are always surrounded by subsidiary cells. (c) Stomata are involved in gaseous exchange. (d) Inner wall of guard cells are thick

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Last Answer : (b) Guard cells are always surrounded by subsidiary cells.

The process of putting a number of pictures and combining it as one for a total effect is known as: a) Photo Montageb) Electric Montage c) Rhythmic Montage d) None of these

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The process of putting a number of pictures and combining it as one for a total effect is known as: a) Photo Montage b) Electric Montage c) Rhythmic Montage d) None of these

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A 3-year-old boy gets seizures whenever he develops fever. Which is the most appropriate strategy so that he does not develop febrile convulsions: A. Treat fever with paracetamol and do not give any anticonvulsant drug B. Continuous phenobarbitone prophylaxis till the age of 10 years C. Continuous diazepam prophylaxis for 3 years D. Intermittent diazepam prophylaxis started at the onset of fever

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Last Answer : D. Intermittent diazepam prophylaxis started at the onset of fever

The term ‘Test Tube Baby’ implies (a) Fertilisation of ovum takes place I the test tube but it develops in uterus (b) Fertilisation of ovum takes place in the test tube and develops in the test tube itself (c) Fertilisation of the ovum takes place in the uterus but develops in the test tube (d) Fertilisation takes place in uterus and embryo develops in uterus

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Last Answer : Ans:(a)