Biology Transport in Plants Animals Part 25 (Questions 1) Class 7 VII | Summary and Q&A

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December 16, 2015
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Biology Transport in Plants Animals Part 25 (Questions 1) Class 7 VII

TL;DR

This video discusses the importance of transport in plants and animals, covering topics such as the role of stomata, blood vessels, excretory products, and platelets.

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Questions & Answers

Q: What is the function of stomata in plants?

Stomata are tiny pores through which the exchange of gases and loss of water due to evaporation take place in plants.

Q: How does the transport of blood occur in the human body?

Blood is transported from the heart to all parts of the body through arteries, while veins carry blood from different body parts back to the heart.

Q: Which cells of the human body contain hemoglobin?

Hemoglobin is present in red blood cells (RBCs) since it is a red pigment. RBCs are responsible for carrying oxygen throughout the body.

Q: How are arteries and veins connected in the human circulatory system?

Arteries and veins are joined by a network of thin blood vessels called capillaries, which allow for exchange of substances between the blood and surrounding tissues.

Q: What is the main excretory product in human beings?

The main nitrogenous waste in human beings is urea, which is eliminated through urine. Different types of animals may have different main excretory products.

Q: How can the absorption of water through plant roots be increased?

Increasing transpiration by keeping plants under the fan can lead to more water absorption through the roots due to the higher transpiration pull.

Q: Why is transportation of materials necessary in plants and animals?

Transportation is necessary for the distribution of food, nutrients, oxygen, and waste materials to ensure the proper functioning and survival of plants and animals.

Q: What happens if there are no platelets in the blood?

Platelets are responsible for blood clotting. Without platelets, clot formation would not occur, leading to prolonged bleeding and a potentially life-threatening loss of blood.

Summary & Key Takeaways

  • The video covers the matching of different steps involved in the transport systems of plants and animals.

  • It explains the functions of stomata, xylem, root hairs, and phloem in plants.

  • The video also discusses the role of arteries, veins, hemoglobin, and capillaries in the human circulatory system.

  • It highlights the main excretory products in human beings, such as urea, ammonia, and uric acid.

  • The video concludes with an explanation of how water reaches great heights in trees and the importance of transpiration pull.

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