Echinoderms are animals that are:
A) Vertebrates
B) Invertebrates
C) Mammals
D) None of these
Which of the following as not a part of hind brain?
A) Cerebellum
B) Thalamus
C) Medulla oblongata
D) pans
Explanation: The thalamus is situated between the cerebral cortex and the midbrain. Therefore it is not part of the hindbrain.
Which of the following regulates breathing?
A) Pons
B) Midbrain
C) Medulla oblongata
D) Thymus
Explanation: This is normally controlled by the medulla oblongata, a region of the hindbrain.
The medulla oblongata sends signals to the heart and diaphragm in reaction to carbon dioxide and oxygen levels, allowing for easier breathing.
Pons regulates the breathing rate.
The brain of an elephant is about:
A) 300 grams
B) 2500 grams
C) 6000 grams
D) 5000 grams
What is the percentage of the noble gas in the atmosphere?
A) About 0.3 %
B) About 2%
C) About 1.5%
D) About 0.9%
______ is/are different standard/s used to gauge the usefulness of a test.
A) Reliability
B) Validity
C) Both (A) & (B)
D) Consistency
Explanation: Reliability and validity are both about how well a method measures something:
Reliability refers to the consistency of a measure (whether the results can be reproduced under the same conditions).
Validity refers to the accuracy of a measure (whether the results really do represent what they are supposed to measure).
