Question

across

1. the process mostly takes place in the _______ of plant leaf mesophyll cells.
2. only _______ plants can photosynthesize.
3. all living things depend on the organic molecules synthesised by plants as a result of ______.
4. the vascular tissue in plants that conducts water and dissolved nutrients upward from the root and also helps to form the woody element in the stem

down

1. many plants stop photosynthesis during the __________ and survive off food reserves produced during the spring and summer.
2. plants produce this while sugar is made of this.
3. great for plants but bad for us!
4. plants wouldnt have been green without this!
5. apart from plants, photosynthesis occurs only in single - celled _______ and protists.
6. if plants didnt produce this, we would have been dead by now!
7. if we breathe through stomata, plants breathe through these.

Explanation:

This is a crossword puzzle related to plant biology, specifically photosynthesis and plant structure/function. Let's solve some clues:

Across:

1. The process (photosynthesis) mostly takes place in the chloroplasts of plant leaf mesophyll cells. Chloroplasts contain chlorophyll and are the site of photosynthesis.
2. Only green plants (with chlorophyll) can photosynthesize, as chlorophyll is needed to capture light energy.
3. All living things depend on organic molecules from plants via photosynthesis, which produces glucose (and other organic compounds) using light energy.
4. The vascular tissue conducting water upward is xylem; it transports water/minerals from roots to leaves and contributes to woody stems.

Down:

1. Many plants stop photosynthesis in winter (due to cold, low light, or dormancy) and use stored food.
2. Plants produce glucose (sugar is made of glucose molecules), and glucose is a product of photosynthesis.
3. Carbon dioxide is great for plants (used in photosynthesis) but can be bad for us in excess (e.g., climate change).
4. Plants are green because of chlorophyll, the pigment that absorbs light for photosynthesis.
5. Apart from plants, photosynthesis occurs in single - celled algae (and protists like euglena) as they have chlorophyll.
6. Plants produce oxygen during photosynthesis; without it, aerobic organisms (including us) would die.
7. Plants "breathe" (exchange gases) through stomata (tiny pores on leaves), similar to how we breathe through lungs (the clue’s comparison is a bit simplified, but stomata are the main gas - exchange structures for plants).

Answer:

Across:

1. chloroplasts
2. green
3. photosynthesis
4. xylem

Down:

1. winter
2. glucose
3. carbon dioxide
4. chlorophyll
5. algae
6. oxygen
7. stomata