Transportation ...

Which of the following materials can be transported through xylem vessels?

1. Water
2. Glucose
3. Starch
4. Sodium
5. Nitrogen

The figure given below shows a tree stem at the start of an experiment (X) and after a few days (Y). In the experiment, phloem tissue was removed from the girdled part. The change observed in Y occurs due to

Bidirectional translocation of food takes place through

The given bar graph shows the concentration of oxygen in blood samples taken from four different arteries from four volunteers during an experiment. Which sample was taken from the pulmonary vein?

Which of the following statements is/are true about the left auricle?

The cells shown in the figure below are found in blood. Which of the following statements is/are correct regarding these cells?



(i) Absence of nucleus is the characteristic feature of the cells shown.
(ii) They help the body fight infections.
(iii) They help in healing of wounds.
(iv) They help transport oxygen and carbon dioxide.

Which part of blood carries/carry minerals, vitamins, sugar and other foods to the body cells?

If red-coloured vessels represent arteries, then _____ vessels represent veins.

Observe the above figure of blood circulation and choose the correct statement among the following.

Consider the following sentences (A) and (B), and choose the correct option accordingly.

A: All veins bring blood to the heart.
B: All veins contain deoxygenated blood.

In the figure shown above, the functions and characteristics of a physiological process X (in plants) have been shown.

Which of the following sentence is true about X?

Refer to the above diagram of excretory system and choose the incorrect statement from among the following:

The given bar graph shows the heartbeats of a person during different types of activity. Which bar shows the sleeping stage of the person?

Read the following statements and select the correct option accordingly.

Statement 1: Plants absorb water and minerals by the roots.
Statement 2: The outer wall of roots have numerous projections called root hair.

The average pulse rate (heart beat) for a person at rest is

Choose the correct alternative from the following:

Assertion (A): Arteries have thick elastic walls
Reason (R): They carry blood from all parts of the body back to the heart with high pressure

Khushi got wounded in an accident. The bleeding from the wound continued for a long time. The doctors found that she was short of

The plant in the figure shows a condition which may be due to blocking or removal of

Which of the following is paired incorrectly?

Pulse beat can be felt in areas where arteries are present superficially. In which of the following areas arteries may be present superficially?