Answer:
2 materials are exchanged between fetal and maternla blood
Explanation:
i just took this test and this was correct
Answer: 1. Cancer 2. Blood virus 3. heart problems
Explanation:
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srry if I am wrong
Seeds have cotyledons from where they can draw their nutrient in their early stages of development. Pollens must draw their nutrient from their environment from the start.
Seeds have an outer coating (testa) that protects the embryo and enable it to remain dormant in the soil until right conditions for growth set forth
Seeds have a fully developed embryo that can begin to grow immediately there are right conditions. However, pollen has a single cell instead of an embryo, which must undertake cell division and specialization before beginning to germinate
Half .
I think that’s right .
Answer:
The diffusion of water across the selectively permeable membrane of an alga is called osmosis
Explanation:
