In the diagram given below, show the path of a pollen tube from the pollen on the stigma into the embryo sac. Name the components of eggapparatus.

______________ is the transfer of pollen grains from anther of the flower to the stigma of the same or a different flower

Answer the questions after observing the diagram given below. 1) Which process is represented in the given diagram.? 2) Name the chemicals used as neurotransmitter in the diagram.?

Draw a labelled diagram of the L.S. of anatropous ovule and list the components of embryo sac and mention their fate after fertilization.

Figure given below shows a beam of light converging at point P. When a concave lens of focal length 16 cm is introduced in the path of the beam at a placve O shown by dotted line such thatOP becomes the axis of the lens, the beam converges at a distance x from the lens. the value x will be equal to

Figure given below shows a beam of light converging at point P. When a concave lens of focal length 16 cm is introduced in the path of the beam at a place O shown by dotted line such that OP becomes the axis of the lens, the beam converges at a distance x from the lens. The value x will be equal to

A system goes from P to Q by two different paths in the P.V. diagram as shown in figure. Heat given to the system in path 1 is 1000 J . The work done by the system along path 1 is more than path 2 by 100 J What is the heat exchanged by the system in path 2 ?

Read the statements given below. Identify and write the concept upon which the given statement is based. Identify and write the name of phenomenon that allows the image formed on retina to remain imprinted there for (1^(th))/(16) of a second after the object is removed from the front of the eyes.

Answer the following questions The observations made by swarali while doing the experiment are given below. Based on these write answers to the questions: Swarali found that the light ray trvelling from the denser medium to a rarer medium goes away from the normal. If the angle of incidence (i) is raised by Swarali, the angle of refraction (r) went on increasing . However after certain value of the angle of incidence. the light ray is seen to return back into the denser medium Draw the diagram of three observations made by swarali.

Answer the following Read the paragraph and answer the questions given below it. A biotic carbon atoms are circulated into the biotic form through processes like photosynthesis and respiration. Green plants convert carbon dioxide into carbohydrates and also produce carbon compounds like proteins and fats. Biotic compounds are transported from plants to apex consumers through intermediate trophic levels. After the death of all types of consumers, carbon is recycled by biotic decomposition. The carbon recycled in this way goes into the atmosphere and can be taken up by living organisms thus ensuring circulation and recycling of carbon in the biosphere. Draw a simple food chain to show transfer of carbon from plants to decomposers.

Read the paragraph and answer the questions given below: Renewable energy is energy produced from sources that do not deplete or can be replensied within a human's life time. The most common examples include wind, solar, geothermal, biomass, and hydroelectric power. This is in contrast to non-renewable energy is derived directly or indirectly from the sun. Sunlight can be captured directly using solar technologies. The sun's heat drives winds, whose energy is captured with turbines. Plants also rely on the sun to grow and their stored energy can be utilized for bioenergy. Not all renewable energy sources rely on the sun. For examples, geothermal energy utilizes the Earth's internal heat, tidal energy relies on the gravitational pull of the moon, and hydroelectric power relies on the flow of water. Name the renewable sources of energy which are not dependent on sun. What are they dependent upon?