What are stomata Class 7 Chapter 11?
Ans. There are small openings on the lower surface of the leaves. These pores are called stomata. These openings are surrounded with guard cells.
What is transportation in Biology for Class 7?
Transportation can be defined as the movement of any substance from one place to another. Water and nutrients required for all metabolic activities should be transported in the body of plants and animals.
Why is transport of materials necessary in a plant or in an animal explain Ncert?
Explain. Ans. Transport of materials is necessary in both plants and animals as every cell needs a regular supply of nutrients and oxygen for releasing energy through respiration. The food that we eat is broken down into smaller components to be absorbed by the cells.
What makes the blood red class7?
Answer: The presence of a red pigment called haemoglobin in red blood cells (RBC) makes the blood look red.
What is plant transportation?
“Transportation is the process that involves the movement of water and necessary nutrients to all parts of the plant for its survival. “ Transportation In Plant. Transportation is a vital process in plants. Trees transport all the nutrients and water it needs for survival from its roots to the tips of the leaves.
What is mean by motion and time?
Motion is a change in position of an object with respect to time. If the position of a body is not changing with respect to time, the body is said to be at rest, motionless, immobile or stationary. Any moving body is said to be in motion.
What are platelets in Class 7?
Platelets are tiny blood cells that help your body form clots to stop bleeding. If one of your blood vessels gets damaged, it sends out signals to the platelets.
Do plants have blood?
plants don’t have blood, and don’t bleed. What they do instead, according to a new study from researchers at the University of Delaware, is open and close channels between cells. Animal cells are highly mobile; blood flows, skin cells grow and move towards the surface to replace older cells, that kind of thing.
What is the similarity between the circulatory system in animals and the transport system in plants?
The vascular system has two parts. Xylem transports water and minerals up, and phloem transports sugar down and to all the cells of the plant. How are the circulatory system in animals and the vascular system in plants similar to each other? Both systems transport food and water to cells.
Does the human body have blue blood?
Sometimes blood can look blue through our skin. Maybe you’ve heard that blood is blue in our veins because when headed back to the lungs, it lacks oxygen. But this is wrong; human blood is never blue. The bluish color of veins is only an optical illusion.
What is xylem and phloem?
The vascular system is comprised of two main types of tissue: the xylem and the phloem. The xylem distributes water and dissolved minerals upward through the plant, from the roots to the leaves. The phloem carries food downward from the leaves to the roots.
What is found in anther?
Anthers are usually compartmentalized and contain the pollen grains (microgametophytes). The pistil, or female part of the flower, is composed of one or a number of carpels (collectively called the gynoecium) that fuse to…
What is speed short?
Speed is defined as. The rate of change of position of an object in any direction. Speed is measured as the ratio of distance to the time in which the distance was covered. Speed is a scalar quantity as it has only direction and no magnitude.
What are the topics in Chapter 11 of Class 7 science?
Topics and Sub Topics in Class 7 Science Chapter 11 Transportation in Animals and Plants: Q.1.Match structures given in Column I with functions given in Column II. (ii) Haemoglobin is present in ___________ cells. (iii) Arteries and veins are joined by a network of ___________ . (vi) Sweat contains water and .
How to get NCERT solution for Class 7 Science Chapter 11?
You can get the NCERT solution for Class 7 Science Chapter 11 from Vedantu and download the PDF of the solutions to read even when you are offline. These solutions are available free of cost. 2.
How to score good marks in Class 7 science exams?
To score good marks in the Class 7 Science examinations, students should refer to the NCERT Solutions while solving the exercise questions present at the end of each chapter.