Biology
Biology, 20.07.2019 09:20, sugar1014

Many cacti in the desert have thick, photosynthetic stems and few or no leaves (or leaves that are modified as spines). why is this body shape adaptive?

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Biology, 24.06.2019 21:50, animeisstupid6
Succulent plants such as aloes are known for their thick stems and leaves, which allow them to store water. which statement best explains how succulents' thick stems and leaves evolved through natural selection? a. thick stems and leaves were selected because succulents need to consume a large supply of water every day. b. thick stems and leaves were selected because they succulents take up more space, which in turn them capture more sunlight. c. thick stems and leaves were selected because they guarantee that young succulents already have all the water they will need for the rest of their lives. d. thick stems and leaves were selected because succulents with these characteristics are more likely to survive hot, dry weather and, thus, produce more offspring.
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Biology, 20.07.2019 22:30, Nateycorn95701
Some plants have thorns, while others have spines. thorns and spines have the same function, but thorns are modified stems and spines are modified leaves. this is an example of which type of structure? homologous embryonic analogous vestigial
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Biology, 11.10.2019 17:30, skittles181927
31. cacti are plants that live in extremely dry environments. unlike most other plants, cacti do nothave regular leaves, but instead have spines. they do have green stems. how would the lack ofregular leaves cacti survive in their environment? in what part of the cacti would photosyn-thesis occur?
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Biology, 13.10.2019 03:10, icantspeakengles
Many cacti, such as saguaros and barrel cacti, have large stems and no leaves. what function of leaves is taken on by the stems of such cacti? a. they produce food by photosynthesis. b. they absorb water and nutrients from the soil. c. they transport materials throughout the plant. d. they store excess water.
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