Answer;
-Stimulus
Environmental change that triggers a definite action on the part of the organism serves as a stimulus.
Explanation;
-A stimulus (plural stimuli) is a detectable change in the internal or external environment.
-A stimulus can be internal or external. Sense organs, such as the ear, and sensory receptors, such as those in the skin, are sensitive to external stimuli such as sound and touch. For instance; A tropism is a response that an organism makes to a stimulus. An example of a common tropism in plants is phototropism. Plants grow towards light sources, and if the direction of light is changed, the plant will also change its direction of growth to accommodate for survival.
Answer:
Explanation:
Prokaryotes have are simple celled and do not have a nucleus while eukaryotes are more complexed and have a nucleus.
Cilla-hair
Cytoplasm- jelly-like fluid
Chromosome- thread-like gene
Cytoskeleton-network of fibers..
Chromosome-consists of dna tightly coiled..
Answer:
Both differentiated cells and sex cells generally do not undergo mitosis past a certain phase of development. These differentiated cells include neurons, myocytes (muscle cells), keratinocytes (skin cells), and most blood cells, including B-cells, T-cells, and red blood cells.
Explanation:
Answer:
Yes
Explanation:
The earthworm has a rounded dorsal (back) surface and a flatter ventral (belly) surface. Usually the dorsal surface is darker than the ventral surface (though sometimes this is obscured in the preservation process).
