Answer: All the options are correct.
Explanation:
A pericardium is the sac that compass the heart , protects , lubricate and keep it in place.
The functions of pericardium are:
1. It keep the heart fixed in its place in the chest cavity.
2. It prevent the heart from stretching and overfilling with blood I.e it minimize blood infow.
3. It prevents friction by lubricating the heart.
4. It protects the heart from infection that might be nearby either from lungs or other organs.
Answer:
C
Explanation:
C represents the Oral Groove which is where the food intake is
Answer:
Steps are given below.
1) Pollen lands on the stigma of the flower.
2) A pollen tube grows down through the style to the ovary.
3) A sperm cell fuses with an egg in the ovule.
Explanation:
First the pollens fall from anther of the male part on the stigma of the female part of the flower. After that, the pollen reached to the ovary through pollen tube. Then the sperm cells of male combine with the egg of female forming a zygote (seed).
When combined the dominant one takes over. Therefore, you see the dominant trait physically, not the recessive one. However, genetically, they are both there.