How many chambers are present in the hearts of birds and mammals and how are they able to maintain their body temperature? Give reason for your answer
I. Observe both the diagrams A and B. Which diagram indicates inhalation? Describe how it occurs. II. If diffusion were to move oxygen in our body, it is estimated that it would take 3 years for a molecule of oxygen to get to our toes from our lungs. Then, how is oxygen delivered to all
A. Observe the structure of hearts A, B and C shown above and answer the following questions: I. Which of the hearts depicted above is present in both birds and Mammals and how are they able to maintain their body temperature? Give reason for your answer. II. Which of the hearts depicted above is present
In order to study patterns of inheritance, Neha had performed typical Mendelian experiments with pea plants in the field. In experiment one, she crossed a pea plant having white flowers (vv) with another pea plant bearing violet flowers (VV). In another experiment, in addition to the colour of the flower she also focussed on the
Study the food chain given below: A. In the given food chain, the amount of energy available at the fourth trophic level is 10 kJ, what will be the energy available at the producer level? B. Is it possible to have three more trophic levels in the above food chain? Justify. C. Which of these
How do muscles move at the cellular level and respond when processed messages are received from the brain?
What changes are observed in the uterus subsequent to implantation of the young embryo in a human female?
How is the information of touch in the ‘sensitive plant’ controlled and coordinated?
How is the information of touch in the ‘sensitive plant’ controlled and coordinated? Read More »
Which parts of the brain perform certain actions for which we do not have any thinking control? What are such actions called, give two examples.
A. Due to narrowing of the bile duct, the bile secretion from the liver to the small intestine was obstructed. How will the process of digestion be affected? B. How does the length of the intestine depend on the nature of food habit in different animals?