Burning of paper to form ash is an example of _____.
DBoth B and C
Study the given diagrams showing the cross-section of two flowers. Which of the following statements is/are incorrect regarding them?
(i) These plants have developed from seeds.
(ii) Flower X is a female flower and flower Y is a bisexual flower.
(iii) Fertilisation can take place in both flowers.
A (i) only
B (ii) only
C (i) and (iii) only
D (ii) and (iii) only
Read the given passage.
The flowers of X plant contain either stamen or pistil while flowers of plant Y contain both stamens as well as pistil.
Select the correct statement regarding X and Y.
A In X, seed setting is assured even in the absence of pollinating agent.
B X could be mustard while Y could be papaya.
C In normal conditions, all the plants of Y changes into seeds after fertilisation.
D The flowers of X prevents cross pollination.
Read the given paragraph with few blanks. __(i)__ body of birds reduces resistance offered by wind. Their __(ii)__ are modified into wings which help them in flight. Birds have __(iii)__ bones which make their body light. Birds are __(iv)__ and maintain constant body temperature. __(v)__ are attached to their lungs which serve as reservoirs of air. Birds maintain equilibrium in flight due to well developed __(vi)__ of brain.
Select the option that correctly fills any 3 of these blanks.
A(i) Spindle shaped, (ii) Hindlimbs, (vi) Cerebrum
B(ii) Forelimbs, (iv) Homeothermic, (vi) Cerebellum
C(i) Radially symmetrical, (iii) Pneumatic, (v) Air sacs
D(iv) Poikilothermic, (v) Air sacs, (vi) Cerebrum
Sagar wants to magnetise an iron bar EF by the stroking method. The given figure shows the direction of stroke.
Which of the following is a possible set of polarities for the given arrangement?