2. Which of the following are matter
2
(a) Solid (b) liquid
(c) gas
(d) smell (e) thoughts
(f) ice
3. Why smell of hot sizzling food reaches you easily but get the smell from cold
food you have to go close ?
2
4. What are the characteristics of the partides of matter?
2
5. Arrange the following in order of increasing density
2.
(a) air (b) chimney exhaust (c) honey water
(d) chalk (e) cotton
(f) iron
6. What is the use of tissue in multicellular organisms?
3
7. Which tissue found in the husk of coconut and why?
3
8. How a neuron looks like draw the figure ?
3
9. How do substances like coz and water moves in and out of the cell ? 3
10. Why the plasma membrane called a selectively permeable membrane?
3
11. Water is a compound and not a mixture justify the statement by two reason?
Answers
Answer:
2. gas
Explanation:
plz mark as BRAINLIST
Answer:
2)solid ,liquid and ice
3) because hot sizzling food's smell is expanded whereas cold food's smell gets contract which will not reach us easily.
4)The characteristics of particles of matter are: All matter is composed of very small particles which can exist independently. (ii) Particles of matter have spaces between them. (iii) Particles of matter are continuously moving. (iv) Particles of matter attract each other.
5)The increasing order of density is air < exhaust from chimney < cotton < water < honey < chalk < iron.
6)But in multicellular organisms, cells are grouped to form tissues. These tissues are specialised to carry out a particular function at a definite place in the body. For example, the muscle cells form muscular tissues which helps in movement, nerve cells form nervous tissue which helps in transmission of messages
7) Sclerenchyma is present in the husk of coconut. Sclerenchyma is a type of simple tissue categorized under permanent tissues. Permanent tissues are the tissues in which cell division is ceased.
8) I have paste the image.
9)The substances like CO2 and water move in and out of a cell by diffusion from the region of high concentration to low concentration. When the concentration of CO2 and water is higher in external environment than that inside the cell, CO2 and water moves inside the cell.
10)The plasma membrane is called a selectively permeable membrane as it permits the movement of only certain molecules in and out of the cells. ... It allows hydrophobic molecules and small polar molecules diffuse through the lipid layer, but does not allow ions and large polar molecules cannot diffuse through the membrane.
11)water is a compound not a mixture. ... Water is a compound formed by hydrogen and oxygen. When water is formed it does not have properties of either oxygen or hydrogen. We cannot seperate the constituents of water by simple physical method.
