A small lake has three trophic levels- phytoplankton (autotrophs), Zooplankton (herbivore) and planktivorous fish (primary carnivore). In this lake, addition of nutrients is allowed to study the 'bottom up' effects". What is the expected biomass of phytoplankton and zooplankton tropic levels?

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#Question id: 5077

#XL - T Zoology

Humans and mice heterozygous for loss-of-function mutations in Pax6 have:

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#Question id: 5078

#XL - T Zoology

A human blastomere is:

TLS Online TPP Program

#Question id: 5079

#XL - T Zoology

The pattern of embryonic development in which only the cells lacking yolk subsequently undergo cleavage is called:

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#Question id: 5080

#XL - T Zoology

As cleavage continues during frog development, the size of the blastomeres:

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#Question id: 5081

#XL - T Zoology

 The vegetal pole of a frog zygote differs from the animal pole in that ________.

TLS Online TPP Program

#Question id: 5082

#XL - T Zoology

 In which of the following organisms does holoblastic cleavage typically occur?

I) sea urchins

II) humans

III) birds

IV) fish