The embryonic stage in frog in which differentiation of mesoderm takes place is called _________.
Neurula Morula Gastrula Blastula
Which of these is an explanation of why a population can fluctuate once it has reached carrying capacity?
A population of organisms always grows rapidly once it reaches carrying capacity Limiting factors can influence the number of organisms in a population once it reaches carrying capacity All populations experience exponential growth once they reach carrying capacity t he number of organisms decreases but never increases once it reaches carrying capacity
Which fungus is known as 'Green Mold' ?
Penicillium Mucus Aspergillus Saccharomyces
__________ is a density-dependent factor.
Temperature Drought Competition Floods
Fresh Yeast cells are good source of ______.
Morphine Nicotine Caffeine Vitamin-B
Based on the data in the graph, which of these statements is true?
At the beginning of the year, there are no houseflies in the population The population size shows a straight-line increase Growth of the housefly population begins to increase rapidly about 3/4 of the way through the first year All of the population will be dead at the end of one year
Fermentation takes place in which component of a cell ?
Cytoplasm Nucleus Mitochondria None of the above
Which tissue of plants conducts food to its body?
Selerides Parenchyma Xylem Phloem
Which of these is NOT a characteristic of a rapid life-history organism?
long life span rapid period of time until maturation early reproduction age small body size
Which pollutant may lead to 'Black foot disease' ?
Hg Cu Cd As
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