When does organogenesis occur during embryonic development?

A. in the fourth week of pregnancy
B. during the last trimester of pregnancy
C. in the third month of pregnancy
D. in the tenth week of pregnancy


Answer: A

Biology & Microbiology

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In a survivorship curve, a type III species, like most insects and plants, is a species that has

A. a strong possibility of becoming extinct in a relatively short period of time. B. an equal probability of dying at any age. C. an extremely long life span. D. the highest probability of dying at a very young age. E. the highest probability of dying as it reaches its maximum life span.

Biology & Microbiology

Which of the following is a conclusion that can be drawn from this graph?

A) Female survivability is more negatively affected by larger brood size than is male survivability. B) Male survivability decreased by 50% between reduced and enlarged brood treatments. C) Both males and females had increases in daily hunting with the enlarged brood size. D) There appears to be a negative correlation between brood enlargements and parental survival. E) Chicks in reduced brood treatment received more food, weight gain, and reduced mortality.

Biology & Microbiology

Clostridium botulinum endospores that have not germinated are generally not harmful.

A) True B) False

Biology & Microbiology

The ________ are endocrine cells that occur in small clusters in the pancreas

Fill in the blank(s) with correct word

Biology & Microbiology