Tag: life processes

Questions Related to life processes

Waste products produced during respiration in plant is/are

biology life processes guttation excretion in plants long distance transport of water

  1. CO$ _{2}$

  2. Water

  3. Oxygen

  4. Both A and B

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Correct Option: D
Explanation:

  • Like animals, plants also respire all the time because their cells need energy, to stay alive, but plants can only photosynthesize when they are in the light. Photosynthesis happens in the chloroplasts of plant cells. 
  • It produces glucose for use by the plant, and oxygen as a waste product. Respiration uses oxygen and produces carbon dioxide and water as a waste product.

So, the correct answer is option D.

Waste products produced by plants is/are

biology life processes guttation excretion in plants long distance transport of water

  1. CO$ _2$

  2. Water

  3. Oxygen

  4. All of the above


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Correct Option: D
Explanation:

Oxygen is a waste product of photosynthesis. While carbon dioxide is exhaled by the plants at night in absence of photosynthesis. Excess water is given out by transpiration.
So the answer is- all of these.

The outermost dead layer of skin is?

biology life processes guttation excretion in plants long distance transport of water

  1. Stratum lucidum

  2. Stratum corneum

  3. Stratum granulosum

  4. Stratum spinosum

  5. Stratum germinativum

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Correct Option: B

Resin canals in Pinus are formed.

biology life processes guttation excretion in plants long distance transport of water

  1. By the separation of secretory cells

  2. By the destruction of secretory cells

  3. Partly by separation and partly by destruction of secretary cells

  4. By large intercellular spaces of the cortex of the stem

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Correct Option: A

Addition of hydrogen and removal of oxygen, known as

biology life processes guttation excretion in plants long distance transport of water

  1. Reduction

  2. Oxidation

  3. Suspended solids

  4. Dispersion

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Correct Option: A

State the following statement true or false:
Contraction phase of the heart is the diastole. 

biology life processes blood pressure circulatory system transportation in animal and plants

  1. True

  2. False

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Correct Option: B
Explanation:

A) The contraction phase of the heart is called systole.

B) The relaxation phase of the heart is called diastole.
So the correct answer is 'False'.

Normal systolic and diastolic value of blood pressure is

biology life processes blood pressure circulatory system transportation in animal and plants

  1. 80/120 mm Hg

  2. 80/40 mm Hg

  3. 140/80 mm Hg

  4. 120/80 mm Hg

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Correct Option: D
Explanation:

A) Blood pressure is always read as systolic/diastolic pressure. Systolic pressure is 120 mm Hg while diastolic pressure is 80 mm Hg.

B) The systolic pressure is 120 mm Hg while diastolic pressure is 80 mm Hg.
C) Systolic pressure is 120 mm Hg.
D) 120 mm Hg here, represents the systolic pressure and 80 mm Hg represents the diastolic pressure.
So the correct answer is '120/80 mm Hg'.

Excess of Na++ ions in human system causes____________________

biology life processes blood pressure circulatory system transportation in animal and plants

  1. Diabetes

  2. Anemia

  3. Low blood pressure

  4. High blood pressure

Show answer
Correct Option: D
Explanation:

  • The increasing of the concentration of Sodium ions in blood would attract water from the surrounding issues, because of the osmotic pressure.
The increasing of the total volume of blood makes the blood pressure higher.
Hence,

Option $D$ is the correct answer.