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romiroy12
romiroy12
@romiroy12
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Joined: Oct 18, 2020
Last seen: Jul 3, 2023
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Topics: 2049 / Replies: 0
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Topic
Why do the walls of the trachea not collapse when there is less air in it?
5 years ago
Forum
Life Processes
Replies: 0
Views: 134
Topic
(a) Draw a diagram of excretory system in human beings and label the following parts. Aorta, kidney, urinary bladder and urethra. (b) How is urine produced and eliminated?
5 years ago
Forum
Life Processes
Replies: 0
Views: 120
Topic
Draw a diagram of human excretory system and label renal artery and urethra. State in brief the function of : (i) renal artery (ii) kidney (iii) ureter (iv) urinary bladder
5 years ago
Forum
Life Processes
Replies: 0
Views: 118
Topic
List in tabular form three differences between arteries and veins.
5 years ago
Forum
Life Processes
Replies: 0
Views: 270
Topic
(a) What is the role of HCl in our stomach? (b) What is emulsification of fats? (c) Which protein digesting enzyme is present in pancreatic juice?
5 years ago
Forum
Life Processes
Replies: 0
Views: 424
Topic
List three characteristics of lungs which make it an efficient respiratory surface.
5 years ago
Forum
Life Processes
Replies: 0
Views: 136
Topic
What would be the consequences of deficiency of hemoglobin in your body?
5 years ago
Forum
Life Processes
Replies: 0
Views: 91
Topic
(a) Name the site of exchange of material between the blood and surrounding cells. (b) Draw a schematic representation of transport and exchange of oxygen and carbon dioxide in human body.
5 years ago
Forum
Life Processes
Replies: 0
Views: 169
Topic
Draw a diagram of human respiratory system and label on it: (i) Diaphragm (ii) Larynx
5 years ago
Forum
Life Processes
Replies: 0
Views: 478
Topic
In mammals and birds, why is it necessary to separate oxygenated and de-oxygenated blood?
5 years ago
Forum
Life Processes
Replies: 0
Views: 94
Topic
Write correct sequence of four steps of method for the preparation of temporary mount of a stained leaf peel.
5 years ago
Forum
Life Processes
Replies: 0
Views: 366
Topic
Why do herbivores have longer, small intestine than carnivores?
5 years ago
Forum
Life Processes
Replies: 0
Views: 153
Topic
Mention the raw materials required for photosynthesis.
5 years ago
Forum
Life Processes
Replies: 0
Views: 93
Topic
(a) Explain how does the exchange of gases occur in plants across the surface of stems, roots and leaves. (b) How are water and minerals transported in plants?
5 years ago
Forum
Life Processes
Replies: 0
Views: 121
Topic
State the role of the following in human digestive system : (i) Digestive enzymes (ii) Hydrochloric acid (iii) Villi
5 years ago
Forum
Life Processes
Replies: 0
Views: 773
Topic
Name the acid presents in the following: (i) Tomato (ii) Vinegar (iii) Tamarind
5 years ago
Forum
Life Processes
Replies: 0
Views: 119
Topic
Draw a diagram of human excretory system and label kidneys, ureters on it.
5 years ago
Forum
Life Processes
Replies: 0
Views: 122
Topic
In single celled organisms diffusion is sufficient to meet all their requirements of food, exchange of gases or removal of wastes but it is not in case of multicellular organisms. Explain the reason for this difference.
5 years ago
Forum
Life Processes
Replies: 0
Views: 650
Topic
(i) Write the balanced chemical equation for the process of photosynthesis. (ii) When do the desert plants take up carbon dioxide and perform photosynthesis?
5 years ago
Forum
Life Processes
Replies: 0
Views: 157
Topic
What are enzymes? Name any one enzyme of our digestive system and write its function.
5 years ago
Forum
Life Processes
Replies: 0
Views: 262
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