Q. 104.5( 35 Votes )
Collect the information to justify the statement ‘Human beings are intelligent and different from other animals’ and present it in the classroom.
Human beings are intelligent and different from other animals due to the following reasons:
I. Size of the brain: in enlarged brain in neuron connections more which increases IQ. Whereas, the number of brain cells actually remains constant in other animals.
II. Development of large number of folds: a greater number of folds in the cerebral cortex is a significant step in human brain evolution, it increases intelligence.
III. Division of cerebrum: Another unique feature of the human brain division of the cerebrum into 2 halves. The left side of our brain controls the right side of our body and right side of our brain controls left side of the body.
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Answer the following.
A. Explain chemical co-ordination in humans and give the names and functions of some hormones.
B. Explain the difference between the excretory system of humans and plants.
C. Explain co-ordination in plants with the help of suitable examples.MHB - Science & Technology
Collect the information to justify the statement ‘Human beings are intelligent and different from other animals’ and present it in the classroom.MHB - Science & Technology
Explain the functions of various endocrine glands by presenting an act like ‘Why I Am Important?’MHB - Science & Technology
Collect information about the evolution of the brain of vertebrates and present it in the classroom.MHB - Science & Technology
Complete the paragraph.
The milk was on the stove. Rasika was engrossed watching television. She smelled something burning. She ran towards the kitchen. The milk was boiling over. She held the vessel with her bare hands but, screaming, she let it go at once. This activity was controlled by ...... cells. Special ends of .......... in these cells collected the information, from where it was transferred to the ........ and then towards the terminal end of the ........... The chemicals produced at the terminal end passed through the minute space i.e. .......... . In this way, …....... were conducted in the body and the process of ........... was completed by conducting the impulses from.... ..... to ........
(Nerve, muscle cell, impulse, dendrite, synapse, axon, reflex action, cell body)MHB - Science & Technology
Write notes on-
Root pressure, Transpiration, Nerve cell, Human brain, Reflex actionMHB - Science & Technology
Draw and label the diagrams.
Human endocrine glands, Human brain, Nephron, Nerve cell, Human excretory system.MHB - Science & Technology
Name the hormones of the following endocrine glands and the function of each.
Pituitary, Thyroid, Adrenal, Thymus, Testis, Ovary.MHB - Science & Technology
Explain in your own words with suitable examples.
A. What is meant by co-ordination?
B. How does excretion occur in human beings?
C. How is excretion in plants useful to human beings?
D. Describe the transportation system in plants.MHB - Science & Technology
Match the pairs and explain.
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