Sexual reproduction takes place through flagellated gametes that are similar in size in:
1. Ulothrix
2. Spirogyra
3. Volvox
4. Fucus
Ecologically important first colonizers of rocks are:
1. | Lichens | 2. | Algae |
3. | Gymnosperms | 4. | Angiosperms |
Which of the following classes of algae store food that is chemically very similar to amylopectin and glycogen?
1. | Chlorophyceae | 2. | Phaeophyceae |
3. | Rhodophyceae | 4. | All algae |
The cell wall polysaccharides of some red algae are the source of:
1. a sugar substitute
2. a source of salt
3. glucose for the study of photosynthesis
4. agar for growing bacteria and other organisms
Evolutionarily, the first terrestrial plants to possess vascular tissues are:
1. | Bryophytes | 2. | Pteridophytes |
3. | Gnetales | 4. | Cycads |
All the following are characteristics of bryophytes except:
1. spore producing
2. dominant gametophyte
3. lignified tissues
4. producing antheridium and archegonium
Oogamous sexual reproduction is seen in:
1. | Ulothrix | 2. | Spirogyra |
3. | Udorina | 4. | Fucus |
The gymnosperms, Pines, are unique because they produce:
1. | leaves in fascicles | 2. | true leaves |
3. | cones | 4. | archegonia |
The bryophytes liverworts are so named as they are an example of:
1. a plant that causes warts
2. a plant that cures liver diseases
3. the Doctrine of Signatures
4. a plant that causes warts, cures liver diseases and is an example of Doctrine of Signatures
The classification system given by Bentham and Hooker is a/an:
1. Artificial system
2. Natural system
3. Phylogenetic system
4. Useless system