Class 7 Science Chapter 11 MCQ. We covered all the Class 7 Science Chapter 11 MCQ in this post for free so that you can practice well for the exam.
Install our MCQTUBE Android app from the Google Play Store and prepare for any competitive government exams for free.
We have divided this huge topic of the NEET syllabus into several small posts on our website for your convenience. You will get their respective links in the related posts section provided below.
Related Posts:
- Transportation in Plants NEET Questions
- MCQ on Plant Growth and Development
- Plant Growth and Development MCQ
MCQ on Science for NEET Students
What is hydroponics?
(A) A technique of growing plants without water.
(B) A technique for growing plants in soil with all essential macronutrients.
(C) A technique of growing plants in a nutrient solution.
(D) A technique of growing plants in a greenhouse.
Option c – A technique of growing plants in a nutrient solution.
The factor(s) that affect the transpiration-driven ascent of xylem sap is/are
(A) cohesion
(B) adhesion
(C) surface tension
(D) all of these
Option d – all of these
Assertion: A plant cell becomes turgid when placed in a hypotonic solution. Reason: The water concentration of the plant cell is lower than that of the surrounding medium, thus the plant cell will become turgid due to endosmosis.
(A) Both assertion and reason are true and the reason is the correct explanation of assertion.
(B) Both assertion and reason are true but the reason is not the correct explanation of assertion.
(C) The assertion is true but the reason is false.
(D) Both assertion and reason are false.
Option a – Both assertion and reason are true and the reason is the correct explanation of assertion.
Read the following statements and select the correct option. Statement I: The decomposition of organic nitrogen into ammonia is called ammonification. Statement II: Some of the ammonia formed during decomposition volatilizes and re-enters the atmosphere but most of it is converted into nitrate by soil bacteria.
(A) Statement I is correct and II is incorrect.
(B) Statement I is incorrect and II is correct.
(C) Both Statements I and II are correct.
(D) Both Statements I and II are incorrect.
Option c – Both Statements I and II are correct.
Select the INCORRECT statement from the following.
(A) Normally stomata are open in the daytime and close during the night.
(B) Change in the turgidity of the guard cells causes the opening or closing of stomata.
(C) The outer wall of each guard cell is thick and elastic.
(D) Besides transpiration, the exchange of oxygen and carbon dioxide in the leaf also occurs through these stomata.
Option c – The outer wall of each guard cell is thick and elastic.
Which of the following is/are structural element(s)?
(A) Carbon
(B) Hydrogen
(C) Oxygen
(D) All of these
Option d – All of these
Endodermis is impervious to water due to the presence of suberised matrix called
(A) pericycle
(B) plasmodesmata
(C) Casparian strip
(D) epidermis
Option c – Casparian strip
Nitrate present in the soil is reduced to nitrogen by the process of
(A) Nitrification
(B) Denitrification
(C) Ammonification
(D) Decomposition
Option b – Denitrification
Select the INCORRECT statement from the following.
(A) Plants obtain sulphur in the form of sulphate.
(B) Sulphur is a constituent of the ring structure of chlorophyll.
(C) Sulphur is present in cysteine and methionine.
(D) Sulphur is a constituent of several coenzymes.
Option b – Sulphur is a constituent of the ring structure of chlorophyll.
Assertion: All solutions have lower water potential than pure water. Reason: When solutes are added to water, the value of water potential decreases.
(A) Both assertion and reason are true and the reason is the correct explanation of the assertion.
(B) Both assertion and reason are true and the reason is not the correct explanation of the assertion.
(C) The assertion is true but the reason is false.
(D) Both assertion and reason are false.
Option a – Both assertion and reason are true and the reason is the correct explanation of the assertion.
Which of the following is NOT a leguminous plant?
(A) Sweet
(B) Lentil pea
(C) Sweet clover
(D) Alnus
Option d – Alnus
Root pressure contributes to forming a continuous chain of
(A) water molecules in the xylem.
(B) develops due to active absorption.
(C) causes water to rise in tall plants by pulling it.
(D) both (A) and (B)
Option d – both (A) and (B)
The deficiency of this micronutrient causes delayed flowering :
(A) Nitrogen
(B) Sulphur
(C) Phosphorus
(D) Molybdenum
Option d – Molybdenum
The ‘Girdling experiment’ proves that
(A) water is mainly pulled through the plant and the driving force for this process is transpiration from the leaves.
(B) phloem is the tissue responsible for the translocation of food.
(C) translocation through the phloem is bidirectional.
(D) translocation is the transport of food away from the roots to green parts of the plants.
Option b – phloem is the tissue responsible for the translocation of food.
A large number of stomata is present on
(A) the upper surface of the dorsiventral leaves
(B) isobilateral leaves
(C) leaves of most the monocot plants
(D) the lower surface of a dorsiventral leaf
Option d – the lower surface of a dorsiventral leaf
Identify the INCORRECT statement regarding biological nitrogen fixation.
(A) It occurs either symbiotically or non-symbiotically.
(B) It is the process of reducing nitrogen to ammonia by living organisms.
(C) It is the process in which ammonia is converted to nitrogen by the enzyme leghaemoglobin.
(D) Frankia exhibits a symbiotic relationship with Alnus by forming root nodules for nitrogen fixation.
Option c – It is the process in which ammonia is converted to nitrogen by the enzyme leghaemoglobin.
When raisins are placed in water, they swell due to
(A) facilitated diffusion
(B) plasmolysis
(C) imbibition
(D) transpiration
Option c – imbibition
The enzyme nitrogenase is sensitive to
(A) nitrogen
(B) oxygen
(C) hydrogen
(D) carbon
Option b – oxygen
Read the given statements. Statement (i): Aspargine and glutamine are the two important amides found in plants that form the structural part of proteins. Statement (ii): Amino acids contain more nitrogen than amides, thus they are transported to other parts of the plant via a xylem vessel. The correct statement/s is/are
(A) Statement (i)
(B) Statement (ii)
(C) Both statements (i) and (ii)
(D) Neither statement (i) nor (ii)
Option a – Statement (i)
Which of the following is NOT true with respect to the active absorption of mineral ions?
(A) It is a physiological process that needs metabolic energy.
(B) It is a carrier-mediated process.
(C) It takes place from higher concentrations (roots) of minerals to lower concentrations (soil).
(D) It is responsible for the water gradient in roots which leads to water absorption by osmosis.
Option c – It takes place from higher concentrations (roots) of minerals to lower concentrations (soil).
We covered all the class 7 science chapter 11 MCQ above in this post for free so that you can practice well for the exam.
Check out the latest MCQ content by visiting our mcqtube website homepage.
