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How is oxygen transported in human beings ?

Which of the following life processes is involved when an athlete sweats after a race?

The study of fossils is helpful to know:

Which of the following does not constitute bio mass?

Mr. Ramesh complains to his doctor of his irregular, disturbed sleep patterns. His appetite has also drastically reduced. The possible reason for this condition could be___________________.

"Oxygen is a waste product of photosynthesis." Comment.

Which of these animals use sound reflected from objects to sense their position?

What are the names and functions of the secretions of liver?

Identify the cells above and their function.

The house_________ little protection when the storm __________

Why xylems are deep seated in plant body?

Structure connecting the foetus to the placenta is:

How is HIV transmitted from one person to another?

Who discovered that RBCs of some individuals were agglutinated by the serum from other individuals?

Question 10
The movement of the shoot towards light is

(a) geotropism
(b) hydrotropism
(c) chemotropism
(d) phototropism

In which part of the cell does glucose breakdown into pyruvate. Trace The breakdown of pyruvate in lack of oxygen. In whichIn which cell of human body does it take place. Name the energy currency of the cell.

Define homeostasis

From where do green plants get carbon dioxide? For 1,2&3marks

Atrio-ventricular septum is made of ___ tissue.

Two examples of turgor movements in plants.

Rana tigrina (adult) is:

Is colchicine harmful for the body ? If yes, then why it is used as a remedy?...

Not under that specific chapter...

Explain the structure of stomata.

Bio-technology is used in which of the following fields?

A filamentous alga X is found in ponds, lakes and slow-moving streams. The filament of this alga simply breaks into two (or more) pieces on maturing and each piece then grows to become a complete new alga.
(a) Name an alga which X is likely to be.
(b) What is the colour of X?
(c) What is the method of forming new algae by the breaking of parent alga known as?
(d) An Amoeba also breaks up to form two daughter Amoebae. What is the difference in the splitting of Amoeba and splitting of this alga as a method of reproduction?
(e) Name one marine animal which reproduces in the same way as alga X.

The organism having a parasitic mode of nutrition is :
(a) Penicillium (b) Plasmodium (c) Paramecium (d) Parrot

Which of the following factors does not affect the growth of natural vegetation?

Name the two type of reproduction.

Which of the following always involves the process of diffusion in?
A. The movement of minerals from the soil into root hair cells.
B. The movement of water into the cells of living things.
C. The movement of dissolved oxygen from the surrounding water into an amoeba.
D. The movement of carbon dioxide from the air into leaf cells.

(a) Name the main organs of the human digestive system. Also name the associated glands.
(b) How do carbohydrates, fats and proteins get digested in human beings?

Approximately, what volume of blood flows through the kidneys per minute?

Iodine crystals are:

Which one of the following is the correct sequence of events that follows in a synaptic transmission of nerve impulse?

1. The presynaptic membrane is depolarized.

2. Voltage gated calcium channels open

3. Release of synaptic Vesicles

4. Calcium enters the synaptic knob

Why seeds kept in water swell up?

(a) The human brain can be broadly divided into three regions. Name these three regions.

(b) What is cranium? What is its function?

Name the two systems of control and coordination in higher animals.

A person with blood group ‘A’ can donate blood to the persons with blood group ‘A’ or ‘AB’ because it

Root pressure is maximum when the

Name the asexual method of reproduction in (a) Hydra, and (b) Plasmodium.

Question 7
Name the type of carbohydrate that can be digested by ruminants but not by humans. Give the reason also.