A man by motorcycle goes from Delhi to Bharatpur , a distance of 192 km, at an average speed of 32 kmph. Another man starts from Delhi by car 2.5 h after the motorcyclist starts and reaches Bharatpur half an hour late. What is the ratio of person on the motorcycle to the person going by car ?

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#Question id: 9159

#Unit 9. Diversity of Life Forms

Which of the following investigations would shed the most light on the future distribution of organisms in temperate regions that are faced with climate change?

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#Question id: 2468

#Unit 2. Cellular Organization

Membrane extension during cell locomotion is driven by:

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#Question id: 13183

#Unit 10. Ecological Principles

The MacArthur-Wilson equilibrium model of island biogeography predicts the number of species found on islands. The figure below depicts two volcanic islands located off a section of mainland coast.

According to the MacArthur-Wilson model, how would the number of bird species change from the time of an island's formation (assuming it remains constant in size and isolation)?

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#Question id: 1338

#Unit 4. Cell Communication and Cell Signaling

Plasmodesmata most closely resemble which of the following structures in animal cells?

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#Question id: 15954

#Unit 12. Applied Biology

some given other factors are reported to affect Somatic embryo (SE) regeneration such as

a) high K+ levels and low dissolved O2  levels promote SE regeneration

b) some volatile compounds like ethanol promote SE regeneration

c) low sucrose concentrations inhibit SE regeneration

d) use of sucrose as carbon source improves both SE induction and maturation as compared to maltose 

Which of the following statement must not be true about SE regeneration?