Home
Class 12
BIOLOGY
Study the following statements and selec...

Study the following statements and select the correct option
(A) Buds are present in the axil of leaflets of the compound leaf
(B) Pulvinus leaf-base is present in some leguminous plants
(C) In Alstonia,the petioles expand,become green and synthesize food
(D) Opposite phyllotaxy is seen in guava.

A

II and IV are correct but I and III are wrong

B

I and III are correct but II and IV are wrong

C

I and IV are correct but II and III are wrong

D

II, III and IV are correct but I is wrong

Text Solution

Verified by Experts

The correct Answer is:
A
Promotional Banner

Topper's Solved these Questions

  • MORPHOLOGY OF FLOWERINGPLANTS

    VMC MODULES ENGLISH|Exercise Illustration|55 Videos
  • MORPHOLOGY OF FLOWERINGPLANTS

    VMC MODULES ENGLISH|Exercise EXAMPLE|40 Videos
  • MORPHOLOGY OF FLOWERINGPLANTS

    VMC MODULES ENGLISH|Exercise EFFICIENT|50 Videos
  • MINERAL NUTRITION

    VMC MODULES ENGLISH|Exercise IMPECCABLE|55 Videos
  • ORGANISMS & POPULATIONS

    VMC MODULES ENGLISH|Exercise In - Chapter exercise C|10 Videos

Similar Questions

Explore conceptually related problems

I. Pulvinus leaf base is present in some leguminous plants. II. Whorled phyllotaxy is seen in Calotropis. III. In Australian Acacia, the petioles expand, become green and synthesese food, IV. A bud is present in the axils of leaflets of a compound leaf.

Read the following statements A and B (A) Many organs of aquatic plants float in water (B) Large air gaps are present in the collenchyma tissues of lotus leaf Select the correct answer.

Consider the following statements : (a) In leguminous plants, leaf base becomes swollen, called pulvinus (b) The fleshy leaves of Onion and Garlic store food (c) The buds in Australian acacia become green and synthesise food (d) In Alstonia, leaves show alternate phyllotaxy. Of the above statements

Read the following statements and select the correct option w.r.t. population attributes (a) Population density is necessarily measured in numbers (b) Tiger census is often based on pug marks and fecal pellets (c) Biomass is not a meaningful measure to know population size. (d) Size of a population for any species is not a static parameter

Read the following statements and select the correct option stating which one is true (T) and which one is false (F). ( A ) ABO grouping is based on the presence or absence of two surface antigens on leucocytes. ( B ) During first pregnancy there is least chance of occurrence of erythroblastosis foetalis due to Rh incompatibility. ( C ) During blood clotting, conversion of fibrinogen to fibrin occurs by action of enzyme thrombokinase. ( D ) All chordates prossess chambered, muscular, dorsal heart to pump blood throughout the body.

Consider the following statement and choose the incorrect option. a. Large and more numerous nucleoli are present in cells actively carrying out protein synthesis. b. Nuclear pores allow bidirectional movement of molecules. c. Cytoskeleton is a glycolipid structure for mechanical support , motility and maintenance of the shape of the cell. d. Steroidal hormones are synthesized by Golgi complex .

Read the following statements and find the suitable option :- (a) Generally petals are green, leaf like and protect the flower in the bud stage. (b) Generally sepals are brightly coloured to attract insects for pollination. (c) If stamens in a flower remain free (no cohesion) this is called polyandrous. (d) Each ovary bears one or more ovules attached to a flattened, cushion like placenta.

Read the following statements about adaptations in desert plants and select the correct ones. (i) They have a thick cuticle on their leaf surfaces. (ii) They have stomata present in deep sunken pits. (iii) They use CAM pathway for photosynthesis. (iv) They have flattened stems and large sized leaves. (v) Their stomata remain closed during the day.

Study the following statements regarding food chains and select the correct ones. (i) Removal of 80% tigers from an area resulted in greatly increased growth of vegetation. (ii) Removal of most of the carnivores resulted in an increased population of deers. (iii) The lenght of food chains is generally limited to 3-4 trophic levels due to energy loss. (iv) The lenght of food chains may vary from 2 to 8 trophic levels. A) i and ii B) ii and iii C) i and iii D) iii and iv