XI Botany

SECTION “A” – (MCQs – Multiple Choice Questions)

NOTE: Attempt all questions from this Section.

Q.1. Choose the correct answer for each from the given options. (09 Marks)

i. Alternate mechanism of carbon dioxide fixation during a dark reaction occurs in

• C2 plants
• C3 plants
• C4 plants
• None of these

ii. Chlorophyll in a Chloroplast is located in

• Grama
• Stroma
• Ribosome
• Pyrenoid

iii. Almond belongs to the family

• Poaceae
• Fabaceae
• Rosaceae
• Colamaceae

iv. The fusion of morphologically similar gametes is called

• Anisogamous
• Isogamous
• Oogamous
• None of these

v. Mucor and Rhizopus belong to

• Zygomycota
• Basidiomycota
• Ascomycota
• Denteromycota

vi. Which organelle releases energy?

• Ribosome
• Mitochondria
• Chloroplast
• Golgi-apparatus

vii. Robert Whittaker included algae in the Kingdom

• Plantae
• Monera
• Protista
• None of them

viii. Rhynia belong to

• Psilopsida
• Lycopsida
• Pteropsida
• Spermopsida

ix. Which one of the following occurs in fresh water?

• Ulva
• Chlorella
• Both of them
• None of them

x. Carnivorous plants grow in habitats with low content of

• Potassium
• Nitrogen
• Calcium
• Phospharous

xi. Pollen grains are produced in

• Stigma
• Ovule
• Ovary
• Anther

xii. The fusion of two nuclei is called

• Plasmogamy
• Karyogamy
• Somatogamy
• Synogamy

xiii. The fungus utilized in baking industry is

• Yeast
• Mushroom
• Penicillium
• Phizopus

xiv. The nutrition in which energy is used by the oxidation of inorganic substances is called

• Phototrophic
• Chemitrophic
• Heterotrophic
• Parasitic

xv. Cold disease are caused by

• Rhinovirus
• Rhabdovirus
• Columella
• Bacteria

xvi. The non-vascular plants are called

• Angiosperm
• Gymnosperm
• Bryophyta
• None of these

xvii. The multinucleate unseptate mycelium is called

• Lichen
• Coenocytic
• Columella
• Nostoc

xviii. Cuseuta is a parasite of which kind?

• Partial root
• Total root
• Partial Stem
• Total Stem

SECTION “B” – (Short Answer Questions)

(22 Marks)

Q.2. Answer any ELEVEN questions from this Section. All questions carry equal marks. Answer of each question should be in 5-6 lines.

i. Describe the structure of an Angiospermic Ovule.

OR

Describe the structure of T.S. of Marchantia thallus.

OR

Write short note on Golgi bodies and Endoplasmic Reticulum.

OR

Write about asexual reproduction in phytophthora infestans.

OR

Draw only the labelled diagram of gametophyte of fern.

ii. What are Carnivorous Plants? Discuss briefly any two of its with examples.

OR

Draw an anatropous or inverted ovule in longitudinal section.

iii. Differentiate between Plasmolysis and Deplasmolysis.

OR

Differentiate between Facilitated Diffusion and Active Transport.

OR

Write a short note on Nutrition in fungi.

iv. Describte the Economic importance of family Rosaceae.

OR

Describe the floral characteristics of Family Mimosaceae.

OR

Write a short note on DNA as hereditary material.

OR

Draw Kerb’s cycle of Respiration.

v. Write a short note on anaerobic break down of Pyruvic acid.

OR

Give an account of the information about symptoms and nature of AIDS.

vi. Describe the Economic importance of Fermentation.

OR

Write a short not on Co-enzymes.

OR

Describe the role of any three important mineral nutrients and their deficiency symptoms in plants.

OR

Write the structure and function of Chloroplast.

OR

Explain the structure of Cell Wall.

vii. Write a short note on Evolution of Seed.

OR

Write the floral formula and draw the floral diagram of the Family Solanaceae.

OR

Discuss briefly the adaptive characters exhibited by the plants when they invaded the land from sea.

viii. Describe asexual reproduction in bacteria.

OR

Write a note on Rhynia as a fassil representative of vascular plants.

OR

Write a short note on Plasma Membrane.

ix. State three events that take place during the light dependent reaction of Photosynthesis.

OR

Draw a labelled diagram of the male Cone of Pinus in longitudinal sections.

OR

Give four common Characters found in Ascomycota.

x. What is the technique of isolating the component of a cell?

OR

Give the salient features of cynobacteria.

OR

Write short note on Source Sink Movement.

OR

Write short note on Plasmolysis and Deplasmolysis.

xi. Differentiate between Light Microscope and Electron Microscope.

OR

Differentiate between Prokaryotes and Eukaryotes.

OR

Distinguish between Cell Wall and Cell Membrane.

xii. Describe advantages and disadvantages of transpiration.

OR

Draw heat diagram of L.S of selaginella-strobilus.

OR

Write a short note on slime mold.

OR

Write a short note on Lichens.

OR

Write a short note on the importance of bacteria.

xiii. Classify bacteria on the basis of forms or shapes.

OR

Write a short note on the importance of Fungi.

OR

Draw a labelled diagram of euglena

xiv. Describe the Cell Theory.

OR

Describe the role of A.T.P as energy currency.

OR

Write short note on Evolution of Leaf.

OR

Describe briefly about Nucleus, Plastid, Mitochondria and Ribosome.

xv. Differentiate between Ascent of Sap and Translocation of food.

OR

Differentiate between Phosphorylation and Oxidative Phosphorylation.

OR

Write a short note on Nutrition in bacteria.

xvi. State the role of water and carbon dioxide in photosynthesis.

OR

Discuss Hepatitis briefly.

OR

Draw a labelled diagram of a Bacterium.

SECTION “C” – (Detailed Answer Questions)

NOTE: Answer any TWO questions from this Section. All questions carry equal marks. (14 Marks)

Q.3. Describe in detail the Life Cycle of Fern or Pinus.

OR

What do you know about Fungi? Describe fungal body and the mode of reproduction in fungi.

OR

Give an account of the diagnostic characters of Ascomycota. Describe the structure and reproduction in Yeast and Rhizopus.

OR

Define Photosynthesis and describe the dark reactions of photosynthesis.

OR

Describe the Life Cycle of a protoctist which causes late blight of potato.

Q.4. Describe the floral characters, floral formula, floral diagram and economic importance of the family Rosaceae or the family Mimosaceae or the family Poaceae.

OR

What is Bacteriophage? Draw the hytic cycle of a bacteriophage.

OR

What are Cyanobacteria. Describe the structure and reproduction in NOstoc.

OR

What is heterotrophic nutrition? Give various types of heterotrophs according to the mode of nutrition.

Q.5. Define Respiration. Describe the aerobic degration of Pyruvic acid.

OR

Define Photosynthesis and describe the mechanism of a light reaction in photosynthesis.

OR

What is transpiration? Write the types of transpiration of give its significance.