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Aspirant Brainstorm » Biology 2017 Apsirants Thread Brainstorm.
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Morning Class, Lets refresh our brain on biology..
Classification Of Living Things
As we all Know that living things are classified into Seven Kingdom which are
There are five Known kingdom which are
The Monera Kingdom consists of organisms that are made up of one cell. These organisms are called unicellular. These unicellular organisms are made of a very simple cell that often lacks many cell parts, such as a nucleus, that are commonly found in other cells. Bacteria are a type of monera.
Protists are similar to monera in that they are unicellular. Protists are a bit more complex because they contain a nucleus. They also have moving parts and can move around within their environment.
Fungi have their own kingdom because there is no other organism like them. They were once thought to be plants but they differ from plants in one major way. Fungi cannot make their own food. Mushrooms are a type of fungi.
All plants are a part of the Plant Kingdom. Plants include trees, grass, flowers, and algae. They all share the common characteristic of being able to make their own food using water and sunlight. Because they only require a few simple requirements, plants can grow almost anywhere.
Organisms in the Animal Kingdom are multicellular and rely on other organisms for food. This kingdom is by far the largest of all the kingdoms. The animals of the Animal Kingdom can be found all over the world and can be any size from very tiny to extremely big.
I would Like to Introduce Our New Teacher. He's known as @Dez , He will be taking us biology.
Goodluck biology students..
Yea i'm pleased to meet you all.
Dez:Yea i'm pleased to meet you all.
Boss Dez..Take over the biology Class
Good day class,lets briefly discuss Evolution in biology.
EVOLUTION(history of life)
Evolution is the gradual process by which the present diversity of plant and animal life arose from the primitive and earliest organisms.Evolution simply refers to the process by which organisms came into existence and it is based on two theories:
The Theory Of Divine Creation:
This theory states that all living organisms were created by God as recorded in the christian bible.
The Theory Of Organic Evolution:
This theory explains the various series of gradual changes which living organisms had undergone in response to environmental changes since the beginning of life.
The theory further elucidates that the first living organisms came from certain molecules which are;methane,ammonia,hydrogen and water.These molecules combine together with the radiation and lightning of the atmosphere to form the first organism.Two scientist,Larmack and Darwin proposed the two theories of organic evolution,we shall discuss that later.
Good day pals,we are going to learn on The Endocrine System and Hormones.Let me give a brief introduction.
THE ENDOCRINE SYTEM
The endocrine system is a gland of internal secretion which act as a control system of ductless glands that secretes hormones within specific organs.Endocrine sytem secrete their products directly into the blood stream rather than through a duct.
Hormones are chemical substances secreted in the endocrine ductless glands directly into the blood stream which on reaching a target organ,it stimulates the activities of that organ.
Classification Of Hormones
Hormones are generally classified into two main classes,namely:
1.The Steroidal hormone which is lipid based.
2.The non-steroidal hormone which is protein based.
MAJOR ENDOCRINE GLANDS IN ANIMALS.
In our next class we shall discuss on PLANT HORMONES.Any Question so far?don't hesitate to ask your questions.
Okay Boss..This will be my first time of hearing Pineal, Thymus, and Testis gland.
youngscholar:Okay Boss..This will be my first time of hearing Pineal, Thymus, and Testis gland.
Dez:really,well thats reason i decided to share some knowledge.
Great Dez..Nice one
I would love to see more of your tutorials..
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Biology students get yourselves prepared,i'll be back in 10 mins time,we're gonna learn alot.
Good evening class.In our previous class we discussed Endocrine System And Animal Hormones.We shall now proceed to Plant hormones.
Plant hormones are chemical substances produced in small amount which stimulates or inhibit growth in the target organ in response to external stimuli.They affect activities such as fruit formation and root development.
MAJOR HORMONES IN PLANT
The hormones in plant include these:
1.Auxin(produced in apices of shoots)
2.Gibberellins(produced in root and stem)
3.Cytokinins(produced in roots and work with auxins for its action)
4.Abscisic acid(produced in leaves,fruits and root caps)
5.Ethene or ethylene(produced in leaves,stem and young fruits)
Hope you grab that.In our next class we shall discuss on EXOCRINE SYSTEM.
Good morning class,we previously treated on Endocrine System and Hormones,now let's talk about the Exocrine System.
THE EXOCRINE SYSTEM/GLANDS
The exocrine glands are glands of external secretion unlike endocrine glands which are of internal secretion.The exocrine glands release their secretions through ducts which empty to the outside or lumen of an organ.
MAJOR EXOCRINE GLANDS
The major exocrine glands include:
The glands listed above release their secretions through duct to the outside of the body.Now lets take a look at the differences between Endocrine And Exocrine Glands.
Difference Between Endocrine And Exocrine Glands.
*Endocrine glands release their secretions directly into the blood without passing through a duct.While,*exocrine glands like sweat and saliva passes through a duct,i.e the sweat passes through the skin.
Any question on what we've learnt so far?
our next topic:LARMACK AND DARWIN'S THEORY ON ORGANIC EVOLUTION.
Question from jamb mock....
Who Postulated the theory of natural selection?
Dez:Question from jamb mock....
Who Postulated the theory of natural selection?
Morning Class..Lets Refresh our brains with these questions..
In which of the following groups of organisms do all the members have asexual method of reproduction?
A. A geen filament algae, a flowering plant and a bird
B. A toad (or frog) , ameoba and mucor ( penicillium)
C. A flowering plant, tape worm (or ascaris) and a green filamentous algae
D. Mucor (or penicillium), a bird and a toad (or frog)
E. Ameoba, mucor (or penicillium ) and a green filamentous algae
The hormone which tones up the muscles of a person in time of danger is from the
A. thyroid gland
C. adrenal gland
The study of organism and the environment of an abandoned farmland is the ecology of?
A. a community
B. a population
C. a specie
D. a habitat
E. an ecosystem
A potometer with a leafy shoot weighed 18.9g initially and weighed 17.9g after one hour. From this it follow that
A. the shoot absorbed 1g of water per hour
B. 1g of water per hour evaporates from the potometer
C. the shoot lost 1g of water per hour
D. the potometer water receded at the rate of 1g per hour
E. the shoot was respiring and lost weight at rate of 1g per hour
A. one chromosome from the male joins another from the female
B. one gene from the male combines with another from the female
C. the male nucleus fuses with the female nucleus
D. one set of chromosome combines with another set from the female
E. one cell from the male fuses with another from the female
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