Write reason. a) New plant does not grow from a seed kept in a closed box or bottle. b) Some of the seeds have cotton or plume. c) Leaf is modified into thorn where water availability is low. d) More types of plants are available in riverside and lake side. (please answer it fast please )
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1 ans Our hypothesis is that the plant will die. We have two plants, one in the jar and one outside of the jar. Both are on the kitchen counter (I've included a link to the photo of the plants at the bottom of this post). We watered both plants prior to putting the one in the jar. Our thought is that the plant in the jar needs to be left alone for the duration (since it is in the jar, technically, we should not be opening the lid to water and such). We believe that eventually, the lack of nutrients (i.e. water, CO2) will kill the plant in the jar, while the plant outside the jar will thrive because it will be watered and will get CO2.
2 ans Encyclopedia Britannica small logo
Encyclopedia Britannica small logoCompare how gymnosperm and angiosperm vascular seed plants store their seed
Encyclopedia Britannica small logoCompare how gymnosperm and angiosperm vascular seed plants store their seedCompare how gymnosperm and angiosperm vascular seed plants store their seed
Encyclopedia Britannica small logoCompare how gymnosperm and angiosperm vascular seed plants store their seedCompare how gymnosperm and angiosperm vascular seed plants store their seedVideo presentation describing the differences in seed storage between angiosperms and gymnosperms.
Encyclopedia Britannica small logoCompare how gymnosperm and angiosperm vascular seed plants store their seedCompare how gymnosperm and angiosperm vascular seed plants store their seedVideo presentation describing the differences in seed storage between angiosperms and gymnosperms.Encyclopædia Britannica, Inc.
Encyclopedia Britannica small logoCompare how gymnosperm and angiosperm vascular seed plants store their seedCompare how gymnosperm and angiosperm vascular seed plants store their seedVideo presentation describing the differences in seed storage between angiosperms and gymnosperms.Encyclopædia Britannica, Inc.See all videos for this article
Encyclopedia Britannica small logoCompare how gymnosperm and angiosperm vascular seed plants store their seedCompare how gymnosperm and angiosperm vascular seed plants store their seedVideo presentation describing the differences in seed storage between angiosperms and gymnosperms.Encyclopædia Britannica, Inc.See all videos for this articleSeed, the characteristic reproductive body of both angiosperms (flowering plants) and gymnosperms (e.g., conifers, cycads, and ginkgos). Essentially, a seed consists of a miniature undeveloped plant (the embryo), which, alone or in the company of stored food for its early development after germination, is surrounded by a protective coat (the testa). Frequently small in size and making negligible demands upon their environment, seeds are eminently suited to perform a wide variety of functions the relationships of which are not always obvious: multiplication, perennation (surviving seasons of stress such as winter), dormancy (a state of arrested development), and dispersal. Pollination and the “seed habit” are considered the most important factors responsible for the overwhelming evolutionary success of the flowering plants, which number more than 300,000 species.
3 ans In plants like Gloriosa superba, The leaf tips get elongated and become tendrils. In some plants like Lathyrus aphaca, the entire leaf gets modified into a tendril and the stipules expand to carry out the function of a leaf.
4 ans Modification Definition Example
Modification Definition Example1) Tendrils The leaves are modified into slender wiry and coiled structures called leaf tendrils and support climbers to climb Pisum Sativum
Modification Definition Example1) Tendrils The leaves are modified into slender wiry and coiled structures called leaf tendrils and support climbers to climb Pisum Sativum2) Spines The leaves modified into a pointed structure and usually protect them from herbivores. Opuntia
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(a) A NEW PLANT DOES NOT GROW FROM A SEED KEPT IN A CLOSED BOTTLE OR BOX
- Plants are autotrophs, that is, they are capable of making their food by the process of photosynthesis.
- During photosynthesis, Carbon dioxide is reduced to form glucose in the presence of sunlight and water.
- Sunlight is the essential component of photosynthesis, Therefore plants can only produce their food during the daytime or when plants are under direct sunlight.
- In this case, where seeds are planted in a closed box they will not grow into a plant as it is devoid of sunlight.
(b) Some of the seeds have cotton or plume because :
- To grow into healthy plants, seeds need sufficient sunlight, air, and water.
- To do so, seeds are scattered away from each other by the process of seed dispersal.
- Seeds of maple, cotton, and dandelion are light in weight.
- These plants have very fine hair or cotton thread by which they can be dispersed through winds.
(c) Leaf is modified into thorns where water availability is low.
- One of the modifications of leaves is, during scarcity of water, the leaves of a few plants are modified into thorns or spines.
- Spines help in reducing the loss of water through transpiration.
- They also protect the plants from grazing animals.
(d) More types of plants are available on riverside and lakeside because.
- Various varieties of plants are present near water bodies due to the availability of nutrients and water near them.
- Plant produce their food from water and carbon dioxide in the presence of sunlight.
- Photosynthesis is favored due to readily available water and nutrients.
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