Biology MCQs
Biology MCQs Test Preparation | Latest 2025 Quiz FPSC, NTS, KPPSC, PPSC, SPSC, BPSC, OTS, UTS, PTS, CTS, ATS, ETEA MCQs Test Questions.
Normal body temperature in mamals like human beings is____________?
A: 26 28°C
B: 36 38°C
C: 46 48°C
D: 56 58°C
36 38°C
Thermostat of human body is present in__________?
A: Fore brain
B: Hind Brain
C: Thalamus
D: Hypothalamus
Hypothalamus
Which of the following structure in plants body is called excretophores?
A: Stem
B: Leaves
C: Flowers
D: Roots
Leaves
The characteristic which enable animals to tolerate dehydration is called__________?
A: Osmoconformation
B: Osmoregulaton
C: Anhydrobiosis
D: Anhydrosis
Anhydrobiosis
Which of the following fishes excrete large volume of diluted urine?
A: Bony Marine fishes
B: Fresh water fishes
C: Both depending upon the surrounding water
D: None of these
Fresh water fishes
In a hot summer after noon, if your bodys Homeostatic machinery keep your internal temperature quite lower than that of external than this is an example of____________?
A: Positive feed back
B: Negative feed back
C: Feed back
D: Osmoregulation
Negative feed back
Marine fish can keep their internal environment hypertonic with respect to the surrounding salty water by retaining.
A: Excessive urea which will increase their internal solute concentration and prevent body shrinkage in hypertonic environment
B: Trimethyl alanine
C: Ammonia
D: Trimethylamine oxide
Trimethylamine oxide
Terrestrial animals like kangaroo rat survive even without drinking water since__________?
A: They dont require water for their metabolic process
B: They can retain excessive water in their body during raining season.
C: They feed on carbohydrate rich seeds which can provide them with metabolic water
D: They are anhydrobiotic organisms
They are anhydrobiotic organisms
Aquatic animals excrete nitrogenous waste commonly in the form of_____________?
A: Ammonia
B: Urea
C: Uric acid
D: Trimethylamine oxide
Ammonia