<span>The answer is nerve net.
Jellyfish has a nerve net that surrounds its
whole body. It makes a series of interconnected neurons that form net-like structure. This net surrounds the whole body of the jellyfish. Some jellyfish may have sensory structures, motor nerve net, and diffuse nerve net. Sensory structures receive environment signals and send them through diffuse nerve net to motor nerve net that activates muscle contractions.</span>
Answer:
The correct option is B
<u> Succession</u> refers to the process that facilitates plant communities gradually changing over a period of time in order to respond to their environment.
Explanation:
Succession can be described as changes that occur in an ecosystem in response to the changes in the environment or any other disturbances.
Succession can be of two types. 1. Primary succession 2.Secondary succession
Primary succession occurs on lands where there was no life before. With time, plants start to grow here and a community is developed.
Secondary succession occurs on lands that have been destroyed due to any disturbances like a flood or a fire. Over time, new plants start to grow on this land and a community is developed.
Answer:
C
Explanation:
Meiosis is the creation of sex cells so it isn't A or B. Meiosis makes two different gametes that are not identical so it has to be C
Answer:
MHCI
Explanation:
Major histocompatibility complex I (MHCI) is present on the nucleated cells of the body. Endogenous pathway represents the pathway of MHC class I molecules.
MHCI display peptide fragment of proteins to the cytotoxic T cells with the help of CD8 ( Cluster of differentiation). CD8 binds with the MHCI and expressed on the surface of cytotoxic T cells.
Thus, the correct answer is option (D).
