Ch 27: Seedless Plants-questions

A strengthening compound found in cell walls of vascular plants is a) chitin b) lignin c) cutin d) cellulose e) carotenoid

*b) lignin*

Which of the following is NOT a characteristic of plants? a) cuticle b) unicellular gametangia c) stomata d) multicellular embryo e) alteration of generations

*b) unicellular gametangia*

___ is a leaf that arose from a branch system. a) antheridium b) microphyll c) megaphyll d) sorus e) microspore

*c) megaphyll*

The green, gametangia-bearing moss plant a) is the haploid gametophyte generation b) is the diploid sporophyte generation c) is called the protonema d) contains cells with single large chloroplasts e) a and c

*a) is the haploid gametophyte generation*

What is the difference between green algae and plants?

All plants develop from multicellular *embryos* that are enclosed in maternal tissues - referred to as embryophytes

True or False? Modern green algae share many biochemical and metabolic traits with modern plants.

*True* Both contain: - chlorophylls a and b and carotenoids such as xanthophylls (yellow pigments) and carotenes (orange pigments) - store excess carbohydrates as starch - cellulose is the major component of their cell walls - share certain details of cell division, including the formation of a cell plate during cytokinesis

The waxy layer that covers aerial parts of plants is the a) cuticle b) archegonium c) protonema d) stoma e) thallus

*a) cuticle*

With of the following statements about ferns isn't true? a) ferns have motile sperm cells that swim through water to the egg-containing archegonium b) ferns are vascular plants c) ferns are the most economically important group of bryophytes d) the fern sporophyte consists of a rhizome, roots, and fronds e) the diversity of ferns is greatest in the tropics

*c) ferns are the most economically important group of bryophytes*

These plants have hollow, jointed stems that are impregnated with silica. a) mosses b) club mosses c) horsetails d) whisk ferns e) hornworts

*c) horsetails*

The bryophytes a) include mosses, liverworts, and hornworts b) include whisk ferns, horsetails, and club mosses c) are small plants that lack a vascular system d) a and c e) b and c

*d) a and c*

Plants probably descended from a group of green algae called a) rhyniophphytes b) Calamites c) epiphytes d) charophytes e) club mosses

*d) charophytes*

In plant life cycles a) the first products of meiosis are gametes b) spores are part of the diploid sporophyte generation c) the embryo gives rise to a zygote d) the first stage in the diploid sporophyte generation is the prothallus

*d) the first stage in the diploid sporophyte generation is the zygote*

These plants have vascularized stems but lack true roots and leaves. a) mosses b) club mosses c) horsetails d) whisk ferns e) hornworts

*d) whisk ferns*

The _____________ is the first stage in the sporophyte generation.

*diploid zygote* - the zygote divides by mitosis and develops into a multicellular embryo, the young sporophyte plant