MCQ
The outer layer of the blastocyst which forms the ectoderm is called
- ACnidoblast
- BGerminal vesicle
- ✓Trophoblast
- DAmnion
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$I.$ Charles Elton developed the concept of ecological pyramid
$II.$ After the name these pyramids are also called as Eltonian pyramids
$III.$ It is a graphical representation or pyramid shaped diagram which depicts the number of organisms, biomass and energy at each trophic level
Which of the statements given above are correct?
