Explore topic-wise InterviewSolutions in Current Affairs.

Correct option is: A. It cancels remaining itrations.

Correct option is: A. Simula 67

Correct option is: B. 1

4-6 liters of air a person can hold in the lungs.

Tidal volume is the amount of air taken into the lungs in a single breath. In the average adult, tidal volume is about 0.5 liters. However, the lungs can hold a total of about 4-6 liters, which is close to ten times the tidal volume. This amount is known as the vital capacity.

Insects that feed on one type of food Monophagous.

The stalk of flower turns into stalk of fruit, integuments turns into coats of seeds and ovule turns into seeds. Ovary turns into fruit.

Palaenotologists determine the age of fossils by using carbon dating method. By using the radio active isotopes of certain elements such as carbon, uranium and potassium, they can identify the age of a fossil. It is called carbon dating method.

Lacewings insects do not feed on plants.

(1) Travelling in public transport like bus, train is good habit and also it is good for environment. 

(2) Travelling with own vehicles requires more fuel consumption and releases more CO₂ into atmosphere. This leads to global warming, due to this sinking of landscape into ocean takes place.

Freshy collected specimen of sheep / goat's kidney or 3D model of a kidney, sharp blade / scapel, tray and a jug of water.

(1) Due to natural disaster, environmental imbalance takes place. 

(2) Environmental pollution gives scope for spreading diseases fastly. 

Eg : Cholera, malaria, diarrhoea etc., will affect the people very much.

(1) Upper surface of the leaves possesses more chloroplasts which enhances more photosynthetic activity. 

(2) The upper surface is shining due to presence of large number of chloroplasts. 

(3) Therefore, upper surface of the leaf is more green and shiny than the lower surface. 

Evaporation of water through leaves is called transpiration. The evaporation creates the "transpiration stream" in plants. Thus, pulling the water upward from the roots.

Similarities : 

(1) Both aerobic and anaerobic respirations take place in all cells (or) both are seen in all multicellular and unicellular organisms. 

(2) ATP is released in both types of respiration. 

(3) First stage of both respirations (Glycolysis) is common. 

(4) Respiratory substrates are same, commonly glucose, fatty acids and amino acids.

In animals special organs are there for respiration. In plants gaseous exchange occurs by diffusion method.

Blood creates some pressure in the blood vessels. Blood pressure is measured by an instrument 'Sphygmomanometer' by taking the readings of systole and diastole of the ventricles.

Vasopression stimulates excretion of concentrated urine. If it is not secreted urine becomes much diluted. The person will lose the controlling capacity of micturition. As a result over urination occurs. This condition is called diabetes insipidus.

An economy is a place where people earn their living by doing various economic activities.

Mimosa pudica, Sun flower.

It is the genotypic ratio of F₁ generation. In F₁ generation, genetically, out of all yellow seed producing pea plants only 25% pea plants produce yellow, i.e., pure breeds (YY). 50% yellow seed producing plants are (Yy). Remaining 25% are green seed producing pure pea plants (yy).

1. Reduce the pollution – Increase the percentage of oxygen. 

2. Don't pollute the atmosphere – Save our resources. 

Several crops such as corn, wheat and cloves are planted in alternating strips across a slope or across the path of the prevailing wind. This is called contour strip cropping.

(C) Low serum calcium and high serum phosphorous

1. Breathing is stopped for a movement while swallowing the food. 

2. When you swallow, the muscles in your throat respond by pulling the voice box up and underneath the tongue, and epiglottis is pulled to cover over larynx.

(B) Hypophophatemia

(A) Diabetes insipidus

(D) Para thyroid hormone

Correct answer is (a) Same amount of H₂ gas is evolved

\(Zn + 2 NaOH\, \overset{\triangle}{\longrightarrow}\) \(\underset{\text{sodium zincate}}{Na_2 ZnO_2} + \underset{\text{Hydrogen gas}}{H_2 \uparrow}\)

\(Zn + H_2SO_4\, \longrightarrow\) \(\underset{\text{sodium sulphate}}{ZnSO_4} + \underset{\text{Hydrogen gas}}{H_2 \uparrow}\)

Same amount of H₂ gas is evolved. it depends on only amount of zinc metal (NaOH and H₂SO₄ are in excess).

(B) Triodo thyronine

Yes, if we drink more water or fruit juices in cold climate conditions we excrete more urine. In summer, most of the excess water is sent out of the body in the form of sweat. But in cold conditions like winter, sweat is very less. So the kidneys send out excess water from the body in the form of urine.

(D) Hormones are substance synthesized in the body in small quantities and control and regulate metabolic events

Correct answer is (b) (i) Amylase (ii) Bile (iii) Pepsin

(i) Salivary glands secrete salivary amylase

(ii) Pancreas secrets trypsin to digest protiens amylase for digestion of carbohydrates, lipase to breakdown fats.

In sympathetic system the metabolic rate increases. Functions like heart beat, lungs, digestion, urination etc., increase. Contraction of blood vessels, dilation of eye pupil are other examples.

A resource is said to be scarce when its supply is short in relation to its demand.

1. Soil is important for food production. We need high quality of soil to grow the crops that we need. 

2. Soil is also important to plants that grow in the wild.

3. Many other types of conservation effects such as plant conservation and animal conservation, depend on soil conservation. 

4. Poor farming methods, such as repeatedly planting same type of crop, excessive use of fertilisers deplete the nutrients in the soil. 

5. So, the soil conservation methods are important. Let us observe them. 

(a) Contour Strip Cropping : Several crops such as corn, wheat and clover are planted in alternating strips across a slope or across the path of the prevailing wind. 

(b) Different crops with different root systems and leaves help to prevent soil erosion. 

(c) The practice of removing individual plants or small groups of plants, leaves other plants standing to anchor the soil. 

(d) By using natural fertilisers in the soil protects the biodiversity of soil. 

(e) Natural pesticides kill the targeted insects. They will not kill the farmer friends "earthworms". Hence, soil fertility is protected.

1. Light – Phototropism 

2. Water – Hydrotropism 

3. Touch – Thigmotropism 

4. Chemicals – Chemotropism 

5. Gravity Stimulus – Geotropism

1. Fresh water is scarce in our locality. 

2. Contaminated water causes so many water borne diseases. People are supposed to go for drinking water to neighbouring village.

Correct answer is 

(d) Glucose \(\overset{\text{Mitochondria}}{\longrightarrow}\) Pyruvate \(\overset{\text{Muscle cells}}{\longrightarrow}\) Ethanol + Lactic acid

Ethanol and lactic acid are the products formed by the an aerobic respiration. here, no CO₂ or water is produced. the glucose does not break completely thus less energy is released in this types of respiration.