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Plant respire during

Primary productivity is measured in terms of

Question 16
Observe the diagram given as Figure 1.1 and label the following terms given in the box.

Im damped vibration,two forces act on the body 1.the restoring force 2.resistive force

What us restoring force.

Why do men have low pitched voice and women have high pitvhed ???

The phenotypic dihybrid ratio in F2 generation is ________.

___ is a condition in which there is excessive secretion of aldosterone, which disturbs the balance of sodium, potassium, and water in the blood and so leads to high blood pressure.

Which of these are the problems of increasing population?

Evolution shouldn't be compared all progress-Describe broadly for 5 marks and example for 2 marks

Write the name of the respiratory pigment and mention it's two function

In the plant shown below, during photosynthesis, what happens first?

What is the major difference between an embryo and a seed

During a breathing cycle, why do lungs always contain a residual volume of air in it?

varicose veins occur when veins are unable to prevent backward flow of blood in places where high blood pressure occurs such as in the feet. this causes swelling of the veins and can be very painful. malfunctioning of which structural part of the veins lead to this condition?

How is the number of chromosomes restored in each generation

In plants, certain pores in the bark are called ___ .

Structure that converts sound waves into mechanical vibrations.

Based on the information given, what kind of person would be least likely to seek out alternative medical treatment?

The tissue that is involved with the transport of food in plants is__.

If a man suffers from haemophilia, which parent could he have inherited it from?

Name an animal which depends on simple diffusion of gases for breathing.

Write the name of male reproductive parts of a flower.

Identify the stages of Prophase I, going from left to right, from the images below.

Give the biological term of the process of mixing of two different substances/ molecules.

What is the importance of nutrients for 1,2&3marks

Why are green plants called producers

Match the reasons given in column 2 to the features of cacti in column 1. There can be multiple matches.

$\begin{array}{cc}Featureofcacti& Reasons\\ a.\text{Spiny leaves}& \left(i\right)\text{Absorbing water from depths of soil}\\ b.\text{Thick, round fleshy stems}& \left(ii\right)\text{Prevent loss of water by transpiration}\\ c.\text{Deep roots}& \left(iii\right)\text{Store water}\\ d.\text{Closed stomata during the day}& \left(iv\right)\text{Prevent animals from eating the cactus}\\ e.\text{Carbon dioxide storage during the night}& \end{array}$

Hormone that controls the amount of water in the body

Which option correctly fills up the blanks in the following equation?

$\left(i\right)+Water\stackrel{Sunlight+\left(ii\right)}{\to }Glucose+\left(iii\right)$

Which of the statements about sex cells is true?

The small pores on the surface of the stems and roots are called _____.

Does genetic combination of mother play a significant role in determining the sex of a new born baby ?

What is the basic requirement for this process shown in the picture to happen?

Which of the following glands secretion starts the digestion of carbohydrates in oral cavity?

Internal respiration may be defined as :
(a) breathing in and releasing of oxygen in the tissue
(b) the oxidation of food substances to release energy
(c) the building up (synthesis) of complex substances
(d) getting rid of carbon dixode that would accumulate in the tissues.

Choose the correct sequence of the path travelled by sperms in the testes.

Transportation of nutrients from soil to leaves and upper branches of a plant/tree cannot take place by simple diffusion because:

Aspirin is a:

The relay-station or relay-centre between cerebrum and cerebellum is __________________.

BCG vaccine is used to prevent which of the following diseases?