Lab 5: Photosynthetic Adaptations Flashcards
(14 cards)
What is the principle organ of photosynthesis?
The Leaf
What is a leaf’s morphology?
-Stem: what the leaf is attached to
-Lamina: broad expanded blade
-Petiole: stalk
*sessile: without distinct petiole
What makes a true leaf?
-leaf gap
-complex vasculature
-Axillary bud: lateral shoot bud
*everything distal to the axillary bud is a single leave
What are the different leaf complexities?
-simple: a single leaf
-pinnately compound: has a bunch of leaves branching out in pairs
-palmately compound: leaves branching out from a single point
What are the arrangements of a leaf?
-opposite: leaves stem out on mirrored sides
-alternate: leaves stems out on alternating sides
What are the types of leaf Venation?
-parallel: veins going only vertical
-netted veins: veins look like veins in animals
Mesomorphic
moist-adapted plants
*thin cuticle
*single layer epidermis
Hydromorphic
wet-adapted plants
*cuticle absent
*single layer epidermis
Xeromorphic
dry-adapted plants
*thickened cuticle
*multi-layer epidermis
What’s the name of the fern we grew in class for two weeks? What type of fern is it?
- Ceratopteris richardii
- Leptosporangiate fern
what is antheridogen?
controls differentiation of either male or hermaphroditic sexual forms
-induces development of males
what are the different variations ferns we worked on?
-Wild type (natural)
-Polka Dot (mutant)
How to identify the male gametophyte fern?
-small tongue-shaped
-only has antheridia
–> makes appearance of a bumpy/bubbled surface
How to identify the hermaphrodite gametophyte fern?
-mitten-shaped
-generally larger
-has both antheridia and archegonia
-archegonia located in the inner notch area
