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Batrachospermum :Origin ,strucutre ,Thallus organisation and reproduction

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                                              Batrachospermum Occurrence:-   (1) Batrachospermum is fresh water alga.    (2) It is found in clear, cool, and running streams.   (3) Deepwater plants are dark violet or reddish in color. But the shallow-water species are olive green.   (4) The intensity of light changes the color of pigments.   (5) The thallus is attached to the substratum. Vegetative structure  (1) The thallus of an adult plant is soft, thick, filamentous.  (2) It is freely branched and gelatinous.   (3) The central axis is made up of a single row of large cells. Whorls of branches of limited growth        are developed on this axis.  (4) These branches are filamentous and dichotomously arranged.  (5) The main axis is corticated. It consists of a row of elongated cylindrical cells.   (6) It is differentiated into nodes and internodes.   (7) There are two types of branches that arise from the nodes:       Branches of limited growth        Branches of unlimited growth Batra
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Practice Questions for NEET Preparation

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                                          Q.1. In many bacteria the cell wall is infolded and form inner invaginated form is called ?, A. Pilli B. Golgi bodies C. Mitochondria D. Mesosome, Q.2. The cell wall of Gram positive bacteria is composed of ?, A.Murein B. Cellulose C. Lipid and protein D. cellulose and protein, Q.3. bacaterium having flagella all over the bodt is called ?, A. peritrichus B.Amphitrichus C. Monotrichus D.None of these , Q.4. Which of the following is symbiotic nitrogen fixer ?, A. Glomus B.frankia C.azolla D.Azatobacter, Q.5.Spirochaetes is ?, A. Bacteria B.BGA C. Fungi D. Virus, Q.5. Which is correct for cellwall of bacteria and fungi ?, A. Formed by Murmeric acid B. Made up of cellulose C. Both are made up of N-acetyl glucosamine D. none of these, Q.6. Which of the following is the feature of crysophytes ?, A. Surface rich of pellicle B. indestructable cell wall C. They are commonly call
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Practice Question for AIIMS

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     Practice Questions for AIIMS Q.1.Wings a pigeon, bat, and mosquito shows ?      A. Atavism B. Convergent evolution C. Divergent evolution D. Mutation, Q.2.Gelatin, an important raw material for the preparation of photographic emulsion is a by-product of ? A. Chicken B   Forest C   Cattle D   Fish, Q.3.The phylogenetic system of classification includes ? A.   Evolution trends only B. Genetic trends only C. Evolution as well as morphology D   Behavior trends in environment, Q.3.Red tide’ is caused by ? A.   Gonylax B Ceratium C Taceratium D All of these, Q.4.A person sitting at rest experiences a temporary cessation of breathing after forced deep breathing for a few minutes. This is due to ? A High amount of co2 in blood B High amount of o2 in blood C Little amount of co2 D Little amount of o2, Q.5.Physiological response of plants to the duration of light and darkness are a ? A   Daily Phase cycle
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NEET Practice Questions 2015

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Questions & Answers Q.1.When the chromosomes line up in cell division this is often referred to as that phase? A. Telophase B. Anaphase C. Metaphase D. Prophase, Q.2. That cellular organ contains enzymes that are thought of digestive? A. Golgi apparatus B. Lysosomes C. Nucleus D. Ribosomes, Q.3. Organs repair themselves through a method of? A. Meiosis B. Mitosis C. Cellular differentiation D. Transformation, Q.4. That of the subsequent is taken into account a model for accelerator action? A. Lock and Key model B. accelerator interaction model C. Transformation model D. Transcription model, Q.5. That of the subsequent statements concerning enzymes isn't true? A. Enzymes are catalysts. B. the majority enzymes ar proteins. C. Enzymes operate most expeditiously at optimum pH. D. Enzymes are destroyed throughout chemical reactions., Q.6. That of the subsequent statements concerning prostaglandins
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Molecular Basis of inheritance-NEET Questions

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                          Questions of the molecular basis of Inheritance Q.1. The isotopes used in the blender experiment are? A. 32 S and 32 P B. 32 S and 35 P C. 35 S and 35 P D. 35 S and 35 P Ans: A Q.2. Semi-conservative mode of replication was demonstrated first in? A. Orchid Root B. Bean root tip C. E. Coli D. Neurospora Ans: B Q.3. The enzyme which unwinds the double helix of DNA? A. ligase. B. helicase C. polymerase D. topoisomerase Ans: B Q.4. The Okazaki fragments are combined by an enzyme ? A. Ligase B. Helicase C. polymerase D. topoisomerase Ans: A Q.5. The inherited human disorder is called by Harrods is ? A. Sex-linked inheritance B. Sex influenced inheritance C. Genetic disorder D. inborn error of metabolism Ans: D Q.6. The step involved in protein synthesis is? A. Transcription and translation B. transcription and transformation C. T
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Question on Algae -Characterstics ,thallus and reproductive system

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                                               Questions on Algae                         Q.1. Agar-Agar is obtained from  ? A. Gelidium B. Polysiphonia C. Fucus D. Lamineria Ans: A Q.2. Plants are which is not differentiated into root, stem and leaf are in under ? A. Pteridophytes B. Gymnosperms C. Thallophyta D. Angiosperms Ans: C Q.3. Which are the most primitive group   of   algae is ? A. BGA B. Green algae C. Yellow Algae D. Red Algae Ans: A Q.4. Iodine is obtained from? A lamineria B. Ulothrix C. Spirogyra D. gelidium Ans: A Q.5. Which of the following is advanced group of algae? A. Cyanophyaecae B. Rhodophyaecae C. Chlorophyaecae D. Phaeophyaecae Ans : B Q.6. Which algae is responsible for red-sea ? A. Trichoderma erytherium B. chlymdomonas C. Ulothrix D. None of these Ans: A Q.7. One of the following is present in BGA? A
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