Collin College Bio 1407 Lab Practical #2 Flashcards | Quizlet

Cell wall component of Fungi

The structural material found in fungal cell walls, known as Chitin.

Zygomycota Characteristic

Produces a thick-walled structure called a zygosporangium during sexual reproduction.

Ascomycota Spore Structure

Produces sexual spores internally within a sac-like structure called an ascus.

Basidiomycota Spore Structure

Produces sexual spores externally on club-shaped structures called basidia.

Lichen

A symbiotic association between a fungus and a photosynthetic partner such as green algae or cyanobacteria.

Dominant generation in Phylum Bryophyta (Mosses)

The haploid Gametophyte ($n$) generation.

Dominant generation in Phylum Pteridophyta (Ferns)

The diploid Sporophyte ($2n$) generation.

Sori

Clusters of sporangia typically found on the underside of fern fronds.

Xylem

Vascular tissue responsible for the conduction of water and dissolved minerals from roots to shoots.

Phloem

Vascular tissue responsible for the transport of organic nutrients (sugars) throughout the plant.

Vascular bundle arrangement in Monocot stems

Vascular bundles are scattered throughout the ground tissue.

Vascular bundle arrangement in Eudicot stems

Vascular bundles are arranged in a distinct ring near the periphery.

Floral part count in Monocots (Liliopsida)

Flowers typically have parts in multiples of $3$.

Floral part count in Eudicots

Flowers typically have parts in multiples of $4$ or $5$.

Double Fertilization

An angiosperm process where one sperm fertilizes the egg ($2n$ zygote) and another fuses with two polar nuclei ($3n$ endosperm).

Phylum Porifera feed cells

Flagellated collar cells known as choanocytes that create water currents and filter food particles.

Phylum Cnidaria specialized cells

Stinging cells called cnidocytes that contain a nematocyst organelle.

Acoelomate

An animal that lacks a body cavity between the digestive tract and outer body wall, such as members of Phylum Platyhelminthes.

Radula

A rasping, tongue-like organ used by many mollusks for scraping food.

Metamerism

The repetition of similar body segments, or true segmentation, found in Phylum Annelida.

Ecdysis

The physiological process of molting or shedding the exoskeleton practiced by Arthropoda and Nematoda.

Water Vascular System

A network of hydraulic canals unique to Phylum Echinodermata used for locomotion and gas exchange.

Deuterostome Development

Pattern of development where the blastopore becomes the anus and cleavage is radial and indeterminate.

Protostome Development

Pattern of development where the blastopore becomes the mouth and cleavage is spiral and determinate.

Triploblastic

Animals possessing three primary germ layers: ectoderm, mesoderm, and endoderm.