Online Shiksha

By Savita S. More

Class 7 Transportation of Materials in Plants and Animals

Last updated on August 30th, 2023 at 01:01 am

Fill in the blanks:- set 2

  1. The thinnest blood vessels are the …………[capillaries]
  2. Due to the presence of …………, the color of red blood cells is red.[hemoglobin]
  3. The ……………. vein is the only vein that transports oxygenated blood.[pulmonary]
  4. …………..is the clear, colorless portion of the blood. [plasma]
  5. Water and minerals travel from the roots to the stem via the ……… tissue. [xylem]
  6. When a person’s kidneys fail, doctors use a procedure called ………. to eliminate waste from the body.[dialysis]
  7. The urinary system’s filtering units are known as …….[Nephrons]
  8. ………….refers to the process of transporting food from the leaves to other parts of the plant. [Translocation]
  9. Excretion in humans is carried out by the ………system.[ urinary]
  10. There are many coiled tubes in the kidney, called ………..[nephrons]

 

Short Answer Question:

 

How many types of blood vessels are there?

There are 3 types of blood vessels which are Arteries veins and capillaries.

 

What are the parts of the circulatory system?

The circulatory system consists of the blood, blood vessels, and heart.

 

How many types of vascular tissues are there?

There are two types of vascular tissues Xylem and phloem

 

What is osmosis?

Osmosis is the process of absorbing water and minerals from the soil by the roots.

 

How do xylem and phloem transport materials in plants?

Xylem transports water and nutrients throughout the plant, while phloem transports food molecules throughout the plant.

 

What are the parts of the excretory system or urinary system?

The urinary system consists of 2 bean-shaped organs called kidneys, a pair of tubes called ureters, an elastic sac called urinary bladder, and a tube called the urethra.

 

How does blood circulate in our bodies?

The blood circulates in the following path: –

Body parts – right auricle – right ventricle – lungs – left auricle – left ventricle – body parts.

 

Long Answer Question:

 

Write a short note on  heart.

The heart is a muscular organ located between the lungs that beats 60 to 80 times a minute throughout life. In the heart, there are four chambers: the top chambers with thinner walls are called auricles, while the lower chambers with thick muscular walls are called ventricles.

 

How many types of blood cells are found in our body?

There are 3 types of blood cells:

RBC – RBCs is disk-shaped cells that contain a red-colored protein called hemoglobin, which is responsible for transporting oxygen throughout the body.

WBC – WBC is slightly larger than RBC and doesn’t have a fixed shape. Their main function is to fight diseases by destroying harmful bacteria and foreign materials.

Platelets: – Platelets are smaller than RBC. They help the blood clot when there is a wound in the body, which stops blood flow, and prevents water loss.

Leave a Reply

Your email address will not be published. Required fields are marked *

This site uses Akismet to reduce spam. Learn how your comment data is processed.

online-shiksha © 2023 Frontier Theme
Online Shiksha