Types of Ecosystems Worksheet Download PDF Fill your E-mail Address Popular Articles

The acceleration due to gravity is the net acceleration that an object close to Earth’s surface experiences due to the combined effect of the gravitational force and the centrifugal force. It is denoted by the letter ‘g’. The numerical value of g is 9.81 m/s 2 . There are slight variations of this value depending on a few factors. Acceleration due to Gravity Formula We shall use Newton’s laws to determine the formula for acceleration due to gravity....

What is Anther The anther is a part of the male reproductive organ of a flowering plant, the stamen. It is a bilobed, pouch-like structure, sitting at the tip of stamen filament. Anther produces and stores pollen grains inside it. Structure Anthers are made up of two cup-like structures called thecae, which remain attached to the slender filament through connective tissue. Each theca contains two microsporangia or pollen sacs, which fuse to form a chamber called locule....

Bryophytes are a collective name for a group of small, seedless, nonvascular land plants. According to the taxonomic division, bryophytes are divided into three main groups: mosses, liverworts, and hornworts. There are around 20,000 species of Bryophytes. Bryophytes Under Microscope Braun first suggested the term ‘Bryophyta’ – a group of non-flowering land plants in 1864. Wilhelm Schimper first classified bryophytes in 1879. Characteristics of Bryophytes Some common characteristics of bryophytes are:...

What is the Calvin Cycle Carbon forms the backbone of all living organisms on earth. All the carbon atoms found in our body was once a part of carbon dioxide gas in the atmosphere. The pathway by which green plants and algae convert atmospheric carbon dioxide into food in the form of glucose is called the Calvin cycle. It is the second phase of photosynthesis that occurs after the light reaction....

Commensalism is a symbiotic relationship between two species, where one species benefits while the other is neither helped nor significantly harmed. In other words, it is a win-neutral situation. The best example of commensalism is sea barnacles attached to the skin of whales. Unlike parasitism, where one organism benefits at the expense of the other, and mutualism, where both organisms benefit, commensalism involves an unequal partnership. The organism benefiting is the commensal, while the other organism is the host....

Between 1856 and 1863, Gregor Johann Mendel, now known as the ‘Father of Modern Genetics’, experimented on garden pea plants and observed their inheritance pattern from one generation to the other. Accordingly, he proposed three laws: 1) Law of Dominance, 2) Law of Segregation, and 3) Law of Independent Assortment, collectively known as Laws of Inheritance. Among all, the law of independent assortment was discovered while performing dihybrid crosses between the pea plants....

DNA replication is the process through which a cell’s DNA forms two exact copies of itself. It occurs in all living organisms as it forms the basis of inheritance in all living organisms. The enzyme carrying out transcription is called DNA polymerase. The primary mechanism of DNA replication is similar across all organisms. Here, we will focus on DNA replication as it takes place in the bacterium E. coli . However, the procedure is the same in humans and other eukaryotes....

The collection of given worksheets provides additional learning opportunities and motivation for understanding how Food Chain, Food Web, and Energy Pyramid work together and are interdependent. Suitable for : Grade 6, Grade 7 Food Chains Food Webs and Energy Pyramid Worksheet Download PDF Food Chain Pyramid Worksheet With Answers Download PDF Fill your E-mail Address Popular Articles

Layers of the Rainforest Worksheet Download PDF Fill your E-mail Address Popular Articles

What is a Lunar Eclipse A lunar eclipse is a natural phenomenon in which the moon appears darkened as it passes into the earth’s shadow. Lunar Eclipse What Causes a Lunar Eclipse The primary condition required for a lunar eclipse to occur is that the sun, the earth, and the moon should be exactly or very closely aligned, with the earth being positioned between the other two. This blocks the light of the sun from reaching the moon’s surface, thereby casting its shadow on the moon and causing a lunar eclipse....

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An occluded front forms when a warm air mass is trapped between two cold air masses. When the two cold air masses begin to converge at the center, the warm air starts to rise. This occurs because warm and cold air masses have different densities and do not mix easily. How are Occluded Fronts Represented on Weather Maps On weather maps, occluded fronts are depicted as a purple line. Along this line, alternating triangles, representing cold fronts, and semicircles, representing warm fronts, are drawn....

Self-inductance is a property of a coil and results from electromagnetic induction. From Faraday’s law, a current-carrying wire produces a magnetic field. When the current changes, the magnetic field also changes. An emf (electromotive force) is induced in the same coil. The direction of the emf is such that it opposes the change in current. In other words, the direction of the induced current is opposite of the primary current....

Layers of Soil Worksheet Download PDF Soil Horizons Worksheet Download PDF Fill your E-mail Address Popular Articles

What is Stamen Stamen is the male reproductive organ of a flowering plant. It is consists of two parts: a long slender stalk, the filament, and a two-lobed anther at the tip. All the stamens of a flower are togetherly termed the androecium. At the base of some stamens, small secretory structures, called nectaries, are often found. They provide food to insect and bird pollinators. Stamen Function The key function of the stamen is to produce pollen grains, housing male gametes or sex cells, necessary for reproduction....

Pollution is defined as introducing harmful substances (solid, liquid, or gas) or any form of energy (light, heat, sound, or radioactivity) into the environment. The harmful elements that damage air, water, and land quality and cause pollution are called pollutants. Pollution is primarily human-made, but nature can have an adverse effect also sometimes acts as a source of pollution. What are the Different Types of Pollution: Causes and Effects Types of Pollution...

Cellular receptors are protein macromolecules that are essential for cell signaling. Like every lock has a specific key, every receptor molecule only recognizes and responds to a particular signaling molecule (ligand). This ligand binding triggers a change in the receptor, leading to a series of downstream signaling actions. Receptors are broadly categorized into two types based on their location. They are intracellular receptors (found inside the cell) and cell-surface receptors (found in the plasma membrane)....

It is common for us to observe ice cubes floating when placed in a glass of water, and icebergs floating on the surface seas and oceans. However, this is a peculiar behavior as solid matter usually sinks in liquid. But ice, or water in its solid state, floats in liquid water for having a lesser density . What Makes Ice Less Dense Than Liquid Water Like all other substances, when cooled, water reduces in volume causing the molecules to get closer to each other, increasing the density....

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