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प्रश्न
“All plants give out oxygen during the day and carbon dioxide during the night”. Do you agree with this statement? Give a reason.
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उत्तर
The statement is incorrect since plants respire and expel carbon dioxide at all times,but they only give out oxygen during the day because photosynthesis can only occur in the presence of sunlight.
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संबंधित प्रश्न
Write the functions of Kidney
What job is done by the kidneys?
Describe the mechanism of urine formation in human excretory system. Draw a labelled diagram to illustrate your answer.
The substance which is not reabsorbed into the blood capillaries surrounding the tuble of a nephron is mainly:
(a) glucose
(b) amino acid
(c) urea
(d) water
Fill in the blank :
Nitrogenous wastes in the urine are in the form of urea and .....................
Write True (T) or False (F) for the following statement. Rewrite the false statement in the correct form.
Excess sugar in the blood is a symptom of diabetes.
Why is excretion necessary in living beings?
Fill in the blank.
Malpighian body consists of Bowman’s capsule and .....................
Fill in the blank.
....................... are present in the stem of pine tree that make the pinewood strong and durable.
Answer the following in short.
List five waste products of plants.
Name the Following
The Inner concave margin of kidney.
Name the Following
The branch of renal artery which enters into Bowman’s capsule.
Choose the correct option.
The part of nephron which absorbs glucose and amino acid is ______.
Osmoregulation maintains the osmolarity of blood at about ______.
If a plant is releasing carbon dioxide and taking in oxygen during the day, does it mean that there is no photosynthesis occurring? Justify your answer.
Leaves of a healthy potted plant were coated with vaseline. Will this plant remain healthy for long? Give reasons for your answer.
Name the organs that store and release the urine.
The main nitrogenous waste formed in the human body:
The statement given below is false. Rewrite the correct form of the statement by changing the underlined word.
The pigment urochrome is the breakdown product of the haemoglobin of dead RBCs.
