Two C atoms form a double bond. Each C is bound to two H atoms. All the atoms lie in a plane. Thus option D is true.
The atom is the basic unit of a matter, it consist of three sub atomic components such as proton, neutron and electron, where proton and neutron present at the central nucleus of atom and electron surround the nucleus.
Proton is positively charged, neutron is neutral and electron is negatively charged; the total number of protons in an atom called as proton number or atomic number which is denoted by the capital letter Z
This number is always a whole numbers range from 1 to 118 according to periodic table element and in an electrically neutral atom the number of electrons is equal to the atomic number.
Thus option D is true.
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Answer:
All the atoms lie in a plane
- the double bond limits all the atoms to a plane
Explanation:
When pollen grains land on the stigma of the correct species, they germinate. A pollen tube grows through the tissues of the flower until it reaches an ovule inside the ovary.
The nucleus of the pollen grain (male gamete) then passes along the pollen tube and joins with the nucleus of the ovule (the female gamete). This process is called fertilization.
After fertilization, the female parts of the flower develop into a fruit. The ovules become seeds and the ovary wall becomes the rest of the fruit.
B. central nervous system.
C. endocrine system.
D. lobes of the brain.
Answer: Central Nervous System
Explanation:
The emotions such as pain, happiness, trauma and other sensory things are controlled by the brain. The things that we feel like pain, heat, cold et cetera are also controlled by the brain.
The nervous system has two parts peripheral nervous system and the central nervous system. The pain signals are carried from the knees to the brain by the central nervous system.
Answer:
It was central nervous system
Explanation:
water
B.
fats
C.
proteins
D.
carbohydrates
The correct answer is Water.
Water is the most important macronutrient for performing all the vital functions of the body. It does not provides energy to the body. The main function of water is to provide a medium for all the metabolic processes that takes place in our body. It helps in absorption of macronutrients but has no nutritive value of its own.Elements such as chloride and fluoride reach the body through this medium.
It is not C. I got it wrong. It is A water!