UPSC  Biology

1. An egg laying mammal is

Delphinus Macaca Ornithorhynchus Macropus

2. In sharks, one of the following is absent

Claspers Placoid scales Cartilaginous endoskeleton Air bladder

3. The devil fish and sea hare are

Molluscs Crustaceans Coelenterates Marine fish and mammal

4. endothelium of blood vessels is made up of

Simple cuboidal epithelium Simple squamous epithelium Simple columnar epithelium Simple non-ciliated columnar

5. In humans, sphincter of Oddi is associated with the opening of

Common hepatopancreatic duct Pyloric stomach Oesophagus Colon

6. In human beings, the duration of cardiac cycle is

0.08 second 0.5 second 0.8 second 8.0 second

7. In which part of nephron, reabsorption is minimum from filtrate

Henle's loop Proximal convoluted tubule Distal convoluted tubule Collecting duct

8. Which hormone level reaches peak during luteal phase of menstrual cycle

Luteinizing hormone Progesterone Follicle stimulating hormone Estrogen

9. The largest subunit of prokaryotic ribosomes is

30S 40S 50S 60S

10. Which of the following is a part of endomembrane system of eukaryotic cell

Peroxisomes Chloroplasts Mitochondria Golgi complexes


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