271. Outer surface of bones is covered by a dense layer of connective tissue, called as ___________ ?
A. Periosteum
B. Woven bone
C. Epithelium lining
D. Connective lining

272. Another name for liver is called ___________ ?
A. Hepar
B. Hepta
C. Heptum
D. Hilum

273. Joints between flat bones of skull are termed as ____________ ?
A. Suture
B. Sutural joints
C. Syndesmosis
D. Both A and B

274. Length of membranous urethra is about ___________ ?
A. 1 cm
B. 2 cm
C. 5 cm
D. 9 cm

275. Division of nucleus is termed as___________ ?
A. Karyokinesis
B. Cytokinesis
C. Anaphase
D. Meiosis

276. Membrane that separates ‘cytoplasm’ and ‘nucleus’ is called ___________ ?
A. Cell wall
B. Cell membrane
C. Boundary
D. Nuclear envelop

277. Which one of the following is referred as the species occupation?
A. Autecology
B. Niche
C. Ecosystem
D. Biome

278. The first ever vascular plants are_________?
A. Cooksonia
B. Selaginella
C. Adiantum
D. Dryopteris

279. Circular disc shaped structure with a round hole is ___________ ?
A. Iris
B. Pupil
C. Horoid coat
D. Ciliary body

280. The higher animals have special organs for exchange of gases as their skin is ___________ ?
A. Thin
B. Thick
C. Soft
D. Hard

NOTE
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