Question

solve it if you can (all)

Answer 1

Ans1) (i) Plasma
(ii) RBC
Ans2)(i) Nasal cavity moistens, filters and warms air to body temperature.
(ii) Diaphragm helps the lungs contract and expand thereby helping in exchange of gasses.
(iii) Alveoli helps in diffusion of oxygen to the blood capillariesand diffusion of carbon dioxide to the alveoli.
Ans3) Translocation is the movement of materials from leaves to other tissues throughout the plant. Plants produce carbohydrates in their leaves by photosynthesis, but non- photosynthetic parts of the plant also require carbohydrates and other organic and non- organic materials.
Ans4) Four chambered hearts are present in mammals and birds.
Ans5) The right and left atria are the top chambers of the heart and receive blood into the heart. The right atrium receives deoxygenated blood from systematic circulation and the left atrium receives oxygenated blood from pulmonary circulation.
Ans6) Breathing is the physical process where you inhale and exhale air in and out of your lungs.... Respiration is a chemical reaction where oxygen is used to breakdown glucose in order to generate energy which is then used by the cell to function.
Ans7) XYLEM: water
PHLOEM: food
PULMONARY VEIN: oxygenated blood from lung to heart
VENA CAVA: transport deoxygenated blood from body to heart
PULMONARY ARTERY: impure blood to lungs
AORTA: oxygenated blood to whole body parts
Ans10) Double circulation system deliver greater blood flow rate to tissues around the body. The metabolic rate of mammals and birds is higher as compared to that of fishers. Hence in order to continue their life processes they need chemical substances more frequently which is transferred by blood.
Ans11)(i) The breathing rate of aquatic animals is faster than that of terrestrial organisms because the amount of dissolve oxygen in the water in much less than the amount on land, so they have to breathe more in order to get more oxygen.
(ii) Because arteries are the first vessels that the heart pumps blood through,they experience the highest blood pressure, so they have thick elastic walls to withstand the high pressure.
Ans12) The products of anaerobic respiration in yeast are ethanol and carbon dioxide.
Ans13) The loss of excess water in the form of vapor from the aerial parts of the plant is known as transpiration. Transpiration is essential for the movement of water and minerals from the root to the healthy parts of the plant. But excess transpiration may result in drying up of the leaves or wilting and loss of soil water. Hence it is termed as a necessary evil.
Ans14)(i) The function of blood vessels is transportation of blood throughout the body.
(ii) Lymph carries digested and absorbed fat from intestine.
(iii) The heart plays an important role of pumping in the circulatory system. Its pumping action maintains the circulation of blood.
Ans15) When we inhale the intercoastal muscles (between the ribs) and diaphragm and contract to expand the chest cavity.
Ans16)The characteristics of a Respiratory System are:
=> thin walls
=> a moist inter surface
=> a huge combined surface area
=> a rich blood supply- each alveolus is sounded by capillaries.
Ans17) In photosynthesis, carbon dioxide and water is yielded to glucose or also known as sugar and oxygen while in respiration,it is the other way around. Sugar and oxygen is yielded to carbon dioxide and water.
Ans18) The kidneys are two bean- shaped organs in the renal system. They help the body pass waste as urine. They also help filter blood sending it back to the heart.




Hope it helps!!!!!
plz mark as brainliest answer!!!!!