What are Amphibians?

The term "amphibian" is a catch-all for all non-amniotic (lacking eggs with a shell), ectothermic ("cold-blooded") tetrapod animals that spend at least part of their time on land. Living examples include frogs, toads, salamanders, and newts.Amphibians are animals that move in and out of the water. Lacking scales like reptiles, amphibians are more prone to dessication (drying out), and so most species require frequent dips to stay moist. Except for a few frog species, amphibians are dependent on pools of fresh water to lay their eggs in.

What makes you to suffocate when you sleep under a tree during night hours?

We all know the fact that plants are also living things and they do respire as we do. Like us, they take in oxygen and give out carbon dioxide. But the true concept behind this is a bit different from us. Plants don't do respiration actively all the time, as we know that it has a prime most duty of photosynthesis to prepare food, which is possible only during the day time where solar energy can be harnessed. They take in carbon dioxide and give out oxygen through stomata. Only in the night hours the plants cant do photosynthesis and thus actively participate in respiration. Thus they vigorously take in the oxygen from their surroundings and give out carbon dioxide and the surrounding lacks oxygen. Thats why we tend to suffocate when we rest under trees during night hours and not due to ghost which is a myth!!!!

Seed facts

Seeds are the matured ovules. Mature seeds of different plants show great variation in shape, size and appearance.

• The outer portion of the seed which gives protection is called the seeds coat or testa.
• On removing the seed coat, we can see two fleshy cotyledons which stores the food for the growing plant.
• A short curved axis is present to which the cotyledons are attached. It has two parts, the plumule which develops into shoot and the radicle which develops into root.

Under appropriate conditions of moisture, warmth and air, the seed germinates to produce a new plant.

Root Facts...

We know that roots are the underground, non-green part of the plant which provides anchorage to the plant.

The main functions of the roots are fixation of the plant firmly to the soil and absorption of water and minerals from the soil . In some cases, the roots are modified to perform specialized functions such as storage and support.

Roots are also of different kinds. They are ,

• Tap roots
• Fibrous roots
• Adventitious roots

Tap root system consists of a prominent main root and many smaller roots emerging from it called the lateral roots. Small fine hair like outgrowths that are present in the lateral root are called root hairs which are responsible for the absorption of water and nutrients from the soil. Dicot plants have tap root system.

Fibrous roots are bunch of roots of similar size. These roots spread out in all directions. Monocot plants have fibrous root system.

Adventitious roots are roots that do not grow from the radicle. They grow from various areas of the plant.

Why our blood is red in color?

Have you ever amazed why our blood is red in color? Why not some other colors? What is the reason behind that? Actually blood is a connective tissue. It is composed of liquid plasma, Red Blood Cells, White Blood Cells and platelets. It acts as a transporting medium for oxygen and nutrients to each and every single cell of the body. Red blood cells, or corpuscles, encased in blood vessels, color the blood. Since there are about 35 trillion of these tiny, round, flat discs circulating in one's body at any one time, their sheer number necessarily lends their red color to the blood. Red blood cells are red only because they contain a protein pigment called hemoglobin (Heme – Iron, Globin- protein)which is bright red in color. Hemoglobin contains the element Iron, which has greater affinity for oxygen. Oxygen imparts a strong red color to the blood.

Learn science through concepts

Science is an interesting subject when it is learned properly and especially through concepts. Now a days children lack interest in this subject because they don't really go deep into the concepts and simply by-heart the concepts for exam sake. Children should develop the tendency to compare the concepts they read in book with everyday activities in life which will develop the true interest towards the subject. When we really understand the concepts..we will definitely feel that science is an amazing thing..Schools should also focus on concept based teaching to create more interest towards the subject.

Amazing Science!!

Do you have the passion for science? You want to know the wonders of science? Then, Go ahead..Sow the seeds today to be a future Einstein....Brainy Einstein Educational academy in Velachery provides exhaustive coaching for children who want to choose science as their field. The innovative teaching methods will definitely open the gateway to science concepts..which will make them feel science an amazing subject...This academy focuses on teaching the technical nitty- gritties of basic science which will pave the way to appear all science competitive exams with confidence.

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