Zoology
Multicellular organisms appeared, approximately
1500 million years ago
1200 million years ago
15.5 million years ago
1400 million years ago
1500 million years ago
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Space separates specialized end of motor nerve fiber and membrane of muscle fiber calledA. sarcomere
B. sarcoplasm
C. sarcolemma
D. sarcodina
Changes in pressure are sensed by the
A. baroreceptor
B. chemoreceptor
C. georeceptor
D. hygroreceptor
Combination of Darwinian evolutionary theory with population genetics is termed as
A. Darwin theory
B. natural selection
C. Lamarck theory
D. Neo-Darwinism
In mammals, tongue and teeth are included in
A. oral cavity
B. serosa
C. sphincters
D. esophagus
At point of vegetal half of embryo, there is invagination of cell called
A. blastulation
B. morulation
C. endoderm
D. gastrulation
In cnidaria, latticework conducted impulses towards body parts, by
A. nerves
B. nerve net
C. neurofibrils nodes
D. neurons
Muscles and excretory structures arise from
A. mesoderm
B. ectoderm
C. endoderm
D. layer
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