Answer: 2. endospores
An endospore is a structure that remains in the dormant state in some bacteria. The term endospore refers to the seed like form, but actually it is not a true spore. Endospore allows bacteria to restrain it's biological activities like obtaining food and reproduction under harsh environmental conditions like freezing and drying. Under favorable conditions these endospores reactivates. The endospore consist of bacterial DNA and ribosome.
Answer: A. scalp hairs grow constantly throughout life.
Explanation:
Hair is a squamous keratinized epithelium which is consist of multi-layered flat cells. Hair are made up of protein called "keratin".
The statement "scalp hairs grow constantly throughout life" is false because at a particular age or due to several factors scalp hairs stop growing.
Scalp hair growth rate depends on three main factors including sex (female hair grows faster than male), age (hair growth slows with age), and ethnicity (Asian hair grows slower than Caucasian hair).
Scalp hair growth stops because of follicle devitalization when the hair length become two or three feet.
Hence, the correct answer is A. "scalp hairs grow constantly throughout life".
Muskrats eat oak trees and if the oak tree had a disease and all of them died. then the muskrat would have to relie on someething else to eat because muskrats eat oak trees.
