Answer: The helical polypeptide chain undergoes coiling and folding to form a complex three-dimensional shape referred to as tertiary structure of proteins. Biology notes for class 11 Alimentary canal and digestion Every living organism needs energy for the proper functioning of their body. The taste buds help in identifying the taste of the food, like sweet, sour, bitter, or salty. The antheridia produce sperms that swim in water to reach the archegonia. This technique is so underrated but incredibly helpful from an examination point of view.
The evolution of the seed habit is related to the retention of the megaspore. The Alimentary canal The food passes through a continuous canal called alimentary canal. We hope these books will help you carve a path out for yourself in the daily study schedule and approach learning in a fun manner. To help their students in the proper way, school teachers and mathematics experts are giving good advice to the. No live animals or specimen should be displayed.
Biodiversity; Need for classification; three domains of life; taxonomy and systematics; concept of species and taxonomical hierarchy; binomial nomenclature; tools for study of taxonomy-museums, zoological parks, herbaria, botanical gardens. These revision notes are prepared by our finest and experienced teachers. We have covered the whole syllabus in these notes. They contain the photosynthetic pigments chlorophylls a and d, and phycoerythrin. Here are a few tips you need to learn to study biology. Answer: a Glycosidic bond is formed normally between carbon atoms, 1 and 4, of neighbouring monosaccharide units.
The small intestine is highly coiled and is about 5 meters long. These spores differ in size. The faecal matter is removed through the anus from time-to-time. The inner walls of the small intestine have thousands of finger-like outgrowths. They contain floridean starch as stored food.
The zygote develops on the gametophytic plant-body to form a sporophyte. The mouth has an oral cavity; it contains gums, teeth, a tongue and muscles. These gametes fuse to form a zygote. The sequence of events by which a cell duplicates its genome, synthesizes the other constituents of cells and eventually divides into two daughter cells is called cell cycle. The produced seeds are naked as there is no fruit formation.
Angiosperms are also known as flowering plants. The young plant comes out of the archegonium of the parent gametophyte. The branch of biology which deals with the identification and classification of organisms is called Taxonomy. The hard surface of the teeth, made up of enamel Enamel is the hardest substance in the human body and contains the highest percentage of minerals , helps in the mastication or chewing of food. This is where these solutions come into the picture — the prescribed answers are reconstituted into a language that is simple to understand and easy to remember. The Central Board of Secondary Education conducted Board Examinations are only a few months away from now. Students must read the chapters thoroughly and solve the exercise wise questions to get a whole clear idea about the biology subject.
It is obtained from the red algae. Sporophyte has very little photosynthetic tissue 5. Vedantu gives you the competitive edge For those who require additional guidance, Vedantu gives students the competitive edge by providing live mentoring sessions, pre-recorded videos of educational sessions, an interactive digital environment for learning, and by giving students the flexibility of choosing from a wide range of mentors hailing from respective academic fields. Lysozyme present in saliva acts as an antibacterial agent that prevents infections. On maturing, these spores dehisce and germinate to give rise to a heart-shaped gametophyte called prothallus. A triploid primary endosperm is formed as a result of triple fusion. The remaining waste passes into the rectum and remains there as semi-solid faeces.
If any pdf file have any copyright voilation please inform us we shell remove that file from our website. In the cells, glucose breaks down with the help of oxygen into carbon dioxide and water, and energy is released. These are called villi singular villus. The egg is produced by the archegonia. Plants trap the energy from the sun solar energy with the help of chlorophyll a green pigment present in the green leaves of many plants andsynthesise carbohydrates from carbon di oxide and water.
Answer: i Protonema — It is the first stage in the life cycle of a moss, developing directly from the spore. The bolus is then conveyed into the pharynx and then into the oesophagus by swallowing or deglutition. They contain the photosynthetic pigments chlorophylls a and c, and fucoxanthin. Heterospory is thus considered an important step in evolution as it is a precursor to the seed habit. This is very effective because the cognitive load is reduced and this, in turn, slows down mental fatigue. The seeds contain haploid endosperms and remain uncovered. Such bonds form the sugar phosphate backbone of nucleic acids.