Which of the following is True?a. Chloroplasts are found primarily in leaf mesophyll cells.b. The space between the outer and inner membranes  chloroplasts is called the thylakoid space.c. Mesophyll cells in the leaf’s center are packed tightly together.d. Vascular bundles of the leaf circulate CO2 and O2.

Photosynthesis sustains plant growth, and inputs of sunlight sustain photosynthesis. Why, then, do seedlings that germinate in a fully darkened room grow taller than seedlings of the same species that germinate in full sun?

You perform the leaf disc experiment using two cups of leaves, one in the light by a window in your kitchen and the other inside a closed kitchen cabinet without any light available. Based on what you know about this experiment, what would happen to the leaves in each cup?     The leaves in the cup in the window will eventually float but the leaves in the cup inside the dark cabinet will not.     All of the leaves in the cups will float.     None of the leaves in the cups will float.     The leaves in the cup in the dark cabinet will eventually float but the leaves in the cup beside the window will not.

A C4 plant minimizes photorespiration by (note that we are talking about standard C4 plant, not CAM plants here) O having the light reactions and carbon reactions occur in different cells, so oxygen does not come into contact with rubisco O having the light reactions and carbon reactions occur in different cells, so carbon dioxide does not come into contact with rubisco O stomata that are only opened at night, storing oxygen in malate, and releasing oxygen during the day O stomata that are only opened at night, storing carbon dioxide in malate, and releasing carbon dioxide during the day

The electrochemical gradient is __________________. A. The total chemical potential gradient B. The total electrical potential gradient C. All the above Water and mineral nutrients are transported from root to shoot via __________________ A. Plasmodesmata B. Xylem C. Phloem D. Cell wall

This is the location of the carbon fixation reactions in C4 plants.      Select one: a.  the leaf's spongy mesophyll b. none of these answers c. the leaf's bundle sheath cells d. the palisade mesophyll e. the nearest apical meristem

What is wood? a. Primary xylem that has accumulated inside a cylinder of vascular cambium O b. Vascular cambium cells C. Secondary xylem that has accumulated inside a cylinder of vascular cambium d. Primary xylem that has accumulated outside a cylinder of vascular cambium e. Secondary xylem that has accumulated outside a cylinder of vascular cambium

Which (look at figure) is an accessory pigment in red flowers?

R Which cellular structures aid a plant when faced with limited water/hydration levels? Unanswered Which two cellular structures aid a plant when faced with limited water/hydration levels? O Select all that apply A chloroplast cell wall B. C. nucleus D. mitochondria central vacuole

Which of the following cell types forms most of the inside of a plant? a. meristem cells b. collenchyma cells c. sclerenchyma cells d. parenchyma cells