1521. Plants produce their own organic nutrients through photosynthesis which of the following terms describes this characteristics ?

A. Gravitotropism
B. Alternation of generations
C. Autotrophism *
D. Herbivory

1522. What tissue comprises the middle layers of the leaf ?

A. Mesophyll *
B. Epidermis
C. Stomata
D. Phloem

1523. Which term have scientists given to the hypothetical flowering hormone ?

A. Cytokine
B. Abscise acid
C. Florigen *
D. Mutagen

1524. Which of the following is found in phloem tissue ?

A. Vessel elements
B. Stomata
C. Companion cells *
D. Tracheid’s

1525. What is the force exerted on the cell wall by the cell’s contents ?

A. Water potential
B. Osmotic potential
C. TATC
D. Turgor pressure *

1526. Which structure might contribute to the asexual reproduction of a plant ?

A. Seed
B. Bulb *
C. Gametophyte
D. Pollen grain

1527. What strategy does a plant use to move in response to stimuli?

A. Differential cell elongation *
B. Muscle fiber activation
C. Myofibril extension
D. Vascularization

1528. Which structure is not part of the androecium ?

A. Anther
B. Stamen
C. Filament
D. Style *

1529. In Which tissue are cells dead at maturity ?

A. Endosperm
B. Xylem *
C. Mesophyll
D. Phloem

1530. Where might you find scale leaves ?

A. Stems
B. Ovaries
C. Flowers
D. Tubers *