Photosynthesis occurs in plant cells, but does not occur in animal cells.
Answer:
All living things are made up of cells. Cells are building blocks of life. Cells are the simplest level of organization. The structure of multicellular organisms are made up of many parts that are required for survival of organisms. The level of organization in multicellular organisms includes: cells, tissues, organs and organ system. The organization is necessary for the body of the organisms to function properly as a characteristic feature of living being.
Magnifying glass is a convex lens that is fitted in a microscope can be used to magnify the image of object under observation. A magnifying glass in a microscope can be used to magnify minute cells and small living creatures. All cells aggregate to form tissues. It can be used to see the arrangement of cells in a tissue specimen and small organelles like chloroplast, mitochondria, nucleus and others.
Therefore, observations under the magnifying glass support the idea of organization is one of the characteristics of life.
The correct example about the relationship between the insect hormones ecdysteroid and PTTH is interaction of the endocrine and nervous system. Hence, Option A is correct.
ENDOCRINE SYSTEM:
It is a complex system which is under hormonal control. Hormones are released by the glands and it cordinates body functions from metabolism to growth and development.
NERVOUS SYSTEM:
It is a complex system consisting of organised group of cells called neurons that carry messages from brain and spinal cord to other various body parts.
As PTTH (prothoracicotropic hormone) stimulates prothoracic gland of an insect that triggers the release of ecdysone hormone for the stimulation there should be an neuroendocrine mechanism. Thus, Option A is correct.
Learn more about hormonal interations here:
brainly.com/question/1218436
#SPJ4
It's called complete dominance of the dominant gene when it totally masks expression by the recessive gene.
