Mycorrhizae are the example of

• Fungistasis

• Amensalism

• Antibiosis

• Antibiosis

Annual migration does not occur in the case of

• salmon

• siberian crane

• salamander

• salamander

Asymptote in a logistic growth curve is obtained when

• The value of 'r' approaches zero

• K = N

• K > N

• K > N

The amnion of mammalian embryo is derived from

• ectoderm and mesoderm

• endoderm and mesoderm

• ectoderm and endoderm

• mesoderm and trophoblast

Alexander Von Humbolt described for the first time

• Ecological Biodiversity

• Laws of limiting factor

• Species area relationships

• Species area relationships