Diatom Cells are enclosed in a cell wall made up of silica or hydrated silicon dioxide namely frustule. The frustule has small walls where nutrients enter, enabling it to perform photosynthesis the same way plants do.
The factor that is responsible for the phenomenon of the blood group B being almost absent in Native Americans whose ancestors arrived in very small numbers about 10,000 years ago would be called the 'founder effect'.
<span>Lymbic syste. These three parts are seen under the cerebrum as on both sides of thalamus. The function of these parts include controlling memories and emotions. It is a complex system of neurons. Hypothalamus is concerned primarily with homoeostasis, Hippocampus is the centreof memories and amygdala is sudden responses.</span>
Answer: A gyrus (plural = gyri) is the ridge of one of those wrinkles, and a sulcus (plural = sulci) is the groove between two gyri. The pattern of these folds of tissue indicates specific regions of the cerebral cortex. The head is limited by the size of the birth canal, and the brain must fit inside the cranial cavity of the skull.
Explanation: Hope this helps :)
Answer:
I think true statement is A.
