28. Plants

Of the following, which is a difference in how reproduction occurs in gymnosperms compared to angiosperms?

Where in an angiosperm would you find a megasporangium?a. in the style of a flowerb. enclosed in the stigma of a flowerc. within an ovule contained within an ovary of a flowerd. packed into pollen sacs within the anthers found on a stamen

Which of the following is a key feature of seed plants facilitating life on land?(A)homospory(B)pollen(C)reduced sporophytes(D)spores

Key features of seed plants facilitating life on land include three of the following four traits. Select the exception.a. homosporyb. pollenc. reduced gametophytesd. seeds

With respect to angiosperms, which of the following is incorrectly paired with its chromosome count?a. egg—nb. megaspore—2nc. microspore—nd. zygote—2n

Angiosperms are different from all other plants because only they havea. a vascular system.b. flowers.c. seeds.d. a dominant sporophyte phase.

Which of the following actions correctly describe a role performed by at least one type of intercellular connection? Select True or False for each statement.T/FAllows communication between adjacent cells.T/FForms a watertight barrier between the cells.T/FUses components of the extracellular matrix to indirectly connect adjacent cells.T/FAssociates with cytoskeletal components to resist pulling forces.

Which of the following is a characteristic that distinguishes gymnosperms and angiosperms from other plants?(A)alternation of generations(B)independent gametophytes(C)vascular tissue(D)ovules

Which of the following is not a characteristic that distinguishes gymnosperms and angiosperms from other plants?a. dependent gametophytesb. ovulesc. pollend. alternation of generations

Which of the following structures produce eggs and sperm? (Explain your answer.)a. fern sporophytesb. moss gametophytesc. the anthers of a flowerd. moss sporangia

Gymnosperms and angiosperms have the following in common excepta. seeds.b. pollen.c. ovaries.d. ovules.

The eggs of seed plants are fertilized within ovules, and the ovules then develop intoa. seeds.b. spores.c. fruit.d. sporophytes.

The diploid sporophyte stage is dominant in the life cycles of all of the following excepta pine tree.a rose bush.a fern.a moss.

DRAW IT Use the letters a–d to label where on the phylogenetic tree each of the following derived characters appears. a. flowersb. embryosc. seedsd. vascular tissue

Which of the following terms includes all the others?a. angiospermb. gymnospermc. vascular plantd. ferne. seed plant