Answer:
True statement regarding phytoplankton is :
<u>They are the primary photosynthetic plants in the ocean</u>
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Explanation:
Phytoplankton : It is made of two words :
"Phyto" means plants
"plankton" means drift .
Hence Phytoplankton are plants that live in water .They are also known as microalgae and are similar to terrestrial plants because they also contain chlorophyll .
Most phytoplanktons are found on the surface of water so that they can get enough sunlight to prepare their food .
There are two kinds of phytoplankton
a) dinoflagellates (they have tail or flagella)
b) diatoms (they are shell like)
<u>They provide food to many organism living in water . example : jelly fish , shrimps etc</u>
<u>Hence they balance the ecosystem</u>
<u>In this way they are primary producers in water -food chain</u>
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Answer:Active immunity involves both cell mediated and humoral immunity. Passive immunity is due to the presence of ready-made antibodies. Active immunity is durable. Active immunity offers effective protection against microbes
Explanation:
Answer is: b) decomposition.
Synthesis is reaction of two or more substances combining to make a more complex substance.
Decomposition is reaction where one substance is broken down into two or more simpler substances.
For example, balanced chemical reactio:
CaCO₃(s) → CaO(s) + CO₂(g).
Chemical decomposition is the separation of a single chemical compound (in this example calcium carbonate) into its two or more simpler compounds (in this example calcium oxide and carbon dioxide).
Combustion is reaction with oxygen.
Single Displacement is reaction where neutral element metal or nonmetal become an ion as it replaces another ion in a compound.
Double displacement reactions (more reactive metals displace metals with lower reactivity).
Answer: 1. The solvent in a mixture of gases is generally considered to be the substance in greater amount. 2. The solid dissolved in a solution is known as the solute. 3. Solid solutions are called alloys.
Explanation:
A binary solution is made up of two components ,called as solute and another as solvent.
A solute is defined as the component which is present in smaller proportion. It can be in solid, liquid or gaseous phase. A solvent is defined as the component which is present in larger proportion in a solution. It can be in solid, liquid or gaseous phase.
Usually in liquid solutions , solid acts as solute and liquid acts as solvent. For example: In salt solution, salt is the solute and water is the solvent.
Solid solutions contains solid as solute and solid as solvent. These are called as alloys. For example : In brass, zinc is the solute and copper is the solvent.
Answer:
3 Pb(NO3)2 + Al2(SO4)3 = 2 Al(NO3)3 + 3 PbSO4
Explanation:
I think your equation is incorrect? This is balanced and the sum of coefficients is 9.
