function of endosperm include in dicots like peas and beans food is stored in cotyledons not in endosperm that is why it is absent in dicots
Endosperm developed from the triploid cell (3n) in the embryo sac where the second male gamete fuses with the diploid secondary nucleus to form primary endosperm nucleus (PEN) and a triploid cell which is called as triple fusion
Endospermic cells are mostly triploid but in some plants, they may be diploid (water lily) or polyploid (up to 15n)
In some of the dicots, mature seeds contain food stored in the endosperm, they are called endospermic or albuminous seeds, e.g. castor
In beans, peas, gram seeds, the endosperm is completely absorbed during development and food is stored in two cotyledons. They are called exalbuminous seeds
Endosperm mostly contains starch as a food reserve, but it may contain fats, e.g. castor, Endosperm provide nutrients to seeds during dormancy
Endosperm also contains certain hormones like cytokinins and helps in cell differentiation
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It is a trait, but is not affected by natural selection.
It is a trait that is shaped by stabilizing selection.
Answer:
The correct answer will be option-
1. Liquid portion of blood- blood plasma.
2. RBC- erythrocytes.
3. WBC- leukocytes.
4. Cell fragments- platelets.
5. Process- hematopoiesis.
Explanation:
The blood is the connective tissue present in the body which connects the two or more systems of the body.The centrifugation of blood showed that the blood is composed of liquid and solid particles as the liquid portion is suspended in the supernatant while the solid particles are present in the pellets.
The liquid portion of the blood is known as blood plasma while the solid portion is composed of three types pf cell: the red blood cell (erythrocytes), white blood cells (leukocytes) and the platelets. All these cells perform different functions like RBC helps in the transport of oxygen, WBC provides immunity to the cell and platelets helps in clotting of the blood.
These blood cells are formed in adults in bone marrow through hematopoiesis from the stem cells presents in the marrow.
Thus, the options are correct.
The liquid portion of blood is plasma, making up about 55% of it's volume. The remaining consists of erythrocytes (red blood cells), leukocytes (white blood cells), and platelets which clot blood. These elements are developed in the bone marrow through a process called hematopoiesis.
The liquid portion of the blood is called plasma and makes up about 55% of the blood volume. The rest of the blood is made up of what's known as the formed elements. These consist of the erythrocytes (another word for red blood cells) and the leukocytes (another word for white blood cells) and cell fragments called platelets which are responsible for clotting. All the blood cells are developed in the bone marrow through a process called hematopoiesis.
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A.nucleus
B.vacuole
C.ribosome
D.mitochondrion
Correct answer: B) Vacuole
Vacuoles are the membrane bound structure found in the plant including algae and in some fungi that function to provide structural support and also serve as a site for storage, and waste disposal for the plant.
They do not have a fixed size or shape, plant cell can changed them according to their need.
It tend to be the largest organelle of the plant cell. It also function to maintain the internal pressure required withing the plant cell to provide structure and support to the growing part of the plant.
The process of photosynthesis, where plants convert sunlight into chemical energy, is best described by the life characteristic of 'Energy Processing'. This process has played a vital role in the evolution of life on Earth.
The characteristic of life that best describes the process of photosynthesis is 'Energy Processing'. During photosynthesis, plants and other photosynthetic autotrophs convert light energy from the sun into chemical energy in the form of glucose, a type of sugar. The equation for photosynthesis is 6CO2 + 6H2O + Light Energy → C6H12O6 + 6O2.
This process not only provides energy for the plant itself, but it also transfers energy up the food chain when plants are consumed by animals. Furthermore, the photosynthesis process releases oxygen as a by-product, which is essential for many forms of terrestrial life.
This transformation of energy was crucial in the evolution of life on Earth, as it allowed living organisms to access an abundance of energy and develop diverse biological structures and functions.
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40 to 44 percent of people are in the range of 0 to 4 years.
A population is a group of different people. There are three different types of population such as rapid growth, slow growth, and negative growth.
In rapid growth, the population will grow rapidly. While slow growth population grows very slowly. In negative growth population growth is negative.
In the population graph, male and female growth is shown. The darker color in the population shows males and the lighter color shows females population.
Therefore, 40 to 44 percent of people are in the range of 0 to 4 years.
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Answer:
looks like about 8% to me