Biology
Injury to the medulla generally results in death. Which of the following reasons support this statement?
P. It controls the activities of the internal organs.
Q. It control involuntary actions like salivation, vomiting, movement of breathing, beating of the heart.
R. It is the main thinking part of the brain.
- Only P
- Only Q
- Only P and Q
- Only P and R
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Harish went to the beach for vacation of 2-3 days. After coming home he noticed his skin tone has darkened. This was due to
- melanin
- rhodopsin
- thyroxine
- serotonin
Maximum transpiration in plant takes place from
- stomata
- cuticles
- lenticels
- root hairs
The external female genitalia is called the
- hymen
- uterus
- vagina
- vulva
After coming from school, Rita wants to watch some programme on TV. She switch it on and press the remote for a particular channel.
Which of the following is/are involved in the process described above?
(a) Cerebrum
(b) Cerebellum
(c) Skeletal muscles
(d) Medulla oblongata- Only c
- Only a and c
- Only c and d
- Only b, c and d