Question
Differentiate between guttation and bleeding in plants.
✓
Answer
| Guttation | Bleeding |
| It is the removal of excess water from the plants because of excess water buildup in the plant. | It is the removal of water from the plant because of injury. |
| Water escapes from specialised structures called hydathodes. | Water escapes in the form of sap from the injured part of the plant. |
| It occurs from edges of leaves. | It occurs from cuts found in plants. |
| It happens due to the pressure presents in the xylem. | It happens due to pressure in sieve tubes. |
Need a full question paper?
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
Explore more
Similar questions
What are the problems faced by India owing to the ‘population explosion’?
Describe the main chemical changes which occur during photosynthesis in:
Light reaction
Light reaction
Column 2 is a list of items related to ideas in Column 1. Match the term in Column 2 with the suitable idea given in Column 1.
| Column 1 | Column 2 | ||
| i | Edward Janner | a | Alexander Flemming |
| ii | Pathogen | b | Pneumonia |
| iii | Streptomycin | c | Smallpox vaccine |
| iv | Penicillin | d | Diseases producing microbe |
| v | Antiseptic | e | Carbolic acid |
| vi | Disinfectant | f | Boric acid |
Differentiate between:
Red blood cells and White blood cells
Red blood cells and White blood cells
Given below is a simple diagram of the human kidney cut open longitudinally. Answer the following questions:
c
(v) Write two differences in the composition of the blood flowing through blood vessels A and B.
c(v) Write two differences in the composition of the blood flowing through blood vessels A and B.
What is a photometer?
Describe fully one experiment with potted green plant to show that starch is not produced in the leaves when carbon dioxide is not available (diagrams essential)
Write a short note on sex determination in man.
A candidate in order to study the process of osmosis has taken 3 potato cubes and put them in 3 different beakers containing 3 different solutions. After 24 hours, in the first beaker the potato cube increased in size, in the second beaker the potato cube decreased in size and in the third beaker there was no change in the size of the potato cube. The following diagram shows the result of the same experiment:
(i) Give the technical terms of the solutions used in beakers, 1, 2 and 3.
(ii) In beaker 3, the size of the potato cube remains the same. Explain the reason in brief.
(iii) Write the specific feature of the cell sap of root hairs which helps in absorption of water.
(iv) What is osmosis?
(v) How does a cell wall and a cell membrane differ in their permeability?
(i) Give the technical terms of the solutions used in beakers, 1, 2 and 3.(ii) In beaker 3, the size of the potato cube remains the same. Explain the reason in brief.
(iii) Write the specific feature of the cell sap of root hairs which helps in absorption of water.
(iv) What is osmosis?
(v) How does a cell wall and a cell membrane differ in their permeability?
Column ‘II’ is a list of items related to ideas in Column ‘I’. Match the term in Column ‘II’ with the suitable idea given in Column ‘I’.
| Column I | Column II | ||
| (i) | Auditory canal | (a) | Channels pressure waves of air into the middle ear. |
| (ii) | Auditory (Eustachian tube) | (b) | Collects pressure waves of air. |
| (iii) | Auditory nerve | (c) | Converts pressure waves of air into vibrations of bone. |
| (iv) | Incus | (d) | Dissipates sound waves. |
| (v) | Malleus | (e) | Equalizes pressure between the middle ear and the atmosphere. |
| (vi) | Oval window | (f) | Provide information about the spatial orientation of the head. |
| (vii) | Pinna | (g) | Transfers vibrations from a bone to a fluid. |
| (viii) | Round window | (h) | Transfers vibrations from a bone to a membrane. |
| (ix) | Semi-circular canal | (i) | Transfers vibrations from a bone to a bone. |
| (x) | Stapes | (j) | Transfers vibrations from a membrane to a bone. |
| (xi) | Tympanic membrane | (k) | Transmits action potential to the auditory cortex. |