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NCERT Exemplar Solutions Class 7 Science Solutions for Transportation in Animals and Plants - Exercise in Chapter 11 - Transportation in Animals and Plants
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Question 23 Transportation in Animals and Plants - Exercise
While learning to ride a bicycle Boojho lost his balance and fell. He got bruises on his knees and it started bleeding. However, the bleeding stopped after some time.
(a) Why did the bleeding stop?
(b) What would be the colour of the wounded area and why?
(c) Which type of blood cells is responsible for clotting of blood?
Answer:
a) Bleeding stopped due to formation of blood clots.
b) Dark red due to clotting of blood.
c) Platelets are responsible for clotting of blood.
Video transcript
"hello everyone welcome to little this is
priyank here we have a question
about isotopes of an element properties
so coming to this
let us read the question now isotopes of
an element have
a the same physical properties
p different chemical properties c
different number of neutrons and t
different atomic numbers
so coming to the option correct option
among these four
the correct option is the isotopes will
have different
number of neutrons because isotopes has
same atomic number and they have
different
atomic mass because there is a
difference in the
number of electron number of neutrons in
that atom
so that's why any isotopes will form
so this is the reason why the isotopes
have
different atomic mass because they have
different number of neutrons
in them so this is about the answer
students hope you understand this video
if you like my video please subscribe to
our leader channel
and if you have any doubts you can keep
a message in comment box thank you"
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