Poikilothermic animals are usually defined as those living species that are able to adapt to the changing environmental conditions, by undergoing variations in the internal body temperature. They are also considered to be cold-blooded animals.

For example, reptiles and fishes.

On the other hand, homeothermic animals are referred to as those living species that able to regulate their body temperature by maintaining constant internal body temperature and are commonly considered as warm-blooded animals.

For example, birds and mammals.

प्रतिवेदन लिखने के लिए निम्नलिखित बातों पर विशेष ध्यान देना चाहिए-
(1) प्रतिवेदन संक्षिप्त हो।
(2) घटना या किसी कार्रवाई की मुख्य बातें प्रतिवेदन में अवश्य लिखी जानी चाहिए।
(3) इसकी भाषा सरल और शैली सुस्पष्ट हो।
(4) विवरण क्रमिक रूप से हो।
(5) पुनरुक्ति दोष नहीं हो यानी एक ही बात को बार-बार भिन्न-भिन्न रूपों में नहीं लिखना चाहिए।
(6) इसके लिए एक सटीक शीर्षक जरूर हो।

The porins are proteins that form huge pores in the outer membranes of the plastids, mitochondria and some bacteria allowing molecules up to the size of small proteins to pass through. Thus they play an important role in facilitated diffusion.

1. Capital is contributed by central or state or both govts.
2. Public welfare or Service is the main objective.
3. Management & control are in the hands of govt.
4. It is accountable to the public.

This law exhibits the short-run production functions in which one factor varies while the others are fixed.

Also, when you obtain extra output on applying an extra unit of the input, then this output is either equal to or less than the output that you obtain from the previous unit.

The Law of Variable Proportions concerns itself with the way the output changes when you increase the number of units of a variable factor. Hence, it refers to the effect of the changing factor-ratio on the output.

Generally, the electronic configuration of these elements is (n-1) d ^1–10ns ^1–2. The (n–1) remains for the inward d orbitals which may have one to ten electrons and the peripheral ns orbital may have one or two electrons. The d–block involves the middle area flanked by s– and p– blocks in the periodic table. The very name "transition" given to the elements of d-block is simply because of their position amongst s– and p– block elements. The d–orbitals of the penultimate energy level in their atoms get electrons leading to the three columns of the transition metals, i.e., 3d, 4d and 5d. The fourth line of 6d is still inadequate

• Consider the fluid initially lying between B and D. In an infinitesimal timeinterval Δt, this fluid would have moved.
  • Suppose v₁= speed at B and v₂= speedat D, initial distance moved by fluid from to C=v₁Δt.
  • In the same interval Δtfluid distance moved by D to E = v₂Δt.
  • P₁= Pressureat A_1, P₂=Pressure at A₂.
  • Work done on the fluid atleft end (BC) W₁ = P₁A₁(v₁Δt).
  • Work done by the fluid at the other end (DE)W₂ = P₂A₂(v₂Δt)
• Net work done on the fluid is W₁ – W₂ = (P₁A₁v₁Δt− P₂A₂v₂Δt)
• By the Equation of continuity Av=constant.
  • P₁A₁ v₁Δt - P₂A₂v₂Δt where A₁v₁Δt =P₁ΔV and A₂v₂Δt = P₂ΔV.
• Therefore Work done = (P₁− P₂) ΔVequation (a)
  • Part of this work goes in changing Kinetic energy, ΔK = (½)m (v₂² – v₁²) and part in gravitational potential energy,ΔU =mg (h₂ − h₁).
• The total change in energy ΔE= ΔK +ΔU = (½) m (v₂² – v₁²) + mg (h₂ − h₁). (i)
• Density of the fluid ρ =m/V or m=ρV

• Therefore in small interval of time Δt, small change in mass Δm
  • Δm=ρΔV (ii)
• Putting the value from equation (ii) to (i)

• ΔE = 1/2 ρΔV (v₂² – v₁²) + ρgΔV (h₂ − h₁)  equation(b)
• By using work-energy theorem: W = ΔE
  • From (a) and (b)
  • (P₁-P₂) ΔV =(1/2) ρΔV (v₂² – v₁²) + ρgΔV (h₂ − h₁)
  • P₁-P₂ = 1/2ρv₂² - 1/2ρv₁²+ρgh₂ -ρgh₁(By cancelling ΔV from both the sides).
• After rearranging we get,P₁ + (1/2) ρ v₁² + ρg h₁ = (1/2) ρ v₂² + ρg h₂
• P+(1/2) ρv²+ρg h = constant.
• This is the Bernoulli’s equation.

Clayton P. Alderfer's ERG theory from 1969 condenses Maslow's five human needs into three categories: Existence, Relatedness and Growth.

Limber-down: After the training session a limber down of 15-20 minutes is essential to help an athlete to recover. Some light exercises are performed without giving jerk to the body to bring back the body temperature near to normal level. Limbering-down is also known as cooling-down exercises.
Importance:
(a) Promotes quick recovery from fatigue.
(b) Slow exercise done after strenous activity continues the blood pumping action of the muscles, thus preventing pooling of blood in extremities,
(c) Muscular stiffness and soreness is prevented
(d) Reduces aches, pains and one feels fresh for training session next day.

(i) Agar is obtained commercially from Gelidium and Gracilaria which is widely used in the preparation of jellies, puddings, cream etc.

(ii) Some brown algae are meanace for shipping.

(iii) Some species of porphyra , laminaria and Sagassum are used as food.

(iv) AN antibiotic chlorellin is extracted out from Chlorella.

• Accepts deposit – The bank takes deposits in the form of saving, current, and fixed deposits. The surplus balances collected from the firm and individuals are lent to the temporary required of commercial transactions.
• Provides Loan and Advances – Another critical function of this bank is to offer loans and advances to the entrepreneurs and businesspeople and collect interest. For every bank, it is the primary source of making profits. In this process, a bank retains a small number of deposits as a reserve and offers (lends) the remaining amount to the borrowers in demand loans, overdraft, cash credit, and short-run loans etc.
• Credit Cash- When a customer is provided with credit or loan, they are not provided with liquid cash. First, a bank account is opened for the customer and then the money is transferred to the account. This process allows a bank to create money.

• Discounting bills of exchange – It is a written agreement acknowledging the amount of money to be paid against the goods purchased at a given point of time in future. The amount can also be cleared before the quoted time through a discounting method of a commercial bank.
• Overdraft Facility – It is an advance given to a customer by keeping the current account to overdraw up to the given limit.
• Purchasing and Selling of the Securities – The bank offers you with the facility of selling and buying the securities.
• Locker Facilities – Bank provides lockers facility to the customers to keep their valuable belonging or documents safely. Banks charge a minimum of an annual fee for this service.
• Paying and Gather the Credit – It uses different instruments like a promissory note, cheques, and bill of exchange.