Micro Lecture 9 - Algae

Question 1

The members of the algae are classified under 3 kingdoms. Enumerate the 3 kingdoms.

Answer 1

• Monera
• Protista
• Plantae

Question 2

Can algae produce their own food? Why?

Answer 2

Yes, because they are autotrophic.

Question 3

Algae has true roots and a vascular system to circulate water and nutrients throughout their body.

True or False?

Answer 3

False

Question 4

Algae are microscopic organisms only.

True or False

Answer 4

False

Question 5

Example of a macroscopic multicellular algae.

Answer 5

Giant Kelp - Sargassum

Question 6

Examples of unicellular microscopic algae (4)

Answer 6

• Diatoms
• Spirogyra
• Euglenoids
• Dinoflagellates

Question 7

Prokaryotic algae

Answer 7

Cyanobacteria (blue-green algae)

Question 8

Microscopic algae reproduce generally through _______, ________, and ________.

Answer 8

• Fragmentation
• Binary Fission
• Mitosis

Question 9

Microscopic algae produce _______ spores.

Answer 9

Motile spores

Question 10

Example of aggregate algae

Answer 10

Volvox

Question 11

Example of filamentous algae

Answer 11

Spirogyra

Question 12

Example of unicellular algae

Answer 12

Diatoms

Question 13

The 5 algal groups

Answer 13

1. Cyanophyta / Cyanobacteria
2. Euglenophyta
3. Pyrrophyta
4. Chrysophyta
5. Chlorophyta

Question 14

In many Asian countries, __________ is valued for human consumption.

Answer 14

Spirogyra spp.

Question 15

Volvox serve as good for aquatic organisms, especially the microscopic invertebrates called _______.

Answer 15

Rotifers

Question 16

Believed to be the precursor of higher plants

Answer 16

Chlorophyta

Question 16

The chlorophyll of the chlorophyta.

Answer 16

Chlorophyll a, b

Question 17

Examples of chlorophyta

Answer 17

Volvox and Spirogyra

Question 18

The reserve materials of the chlorophyta

Answer 18

Starch

Question 19

The cell wall of the Chlorophyta is made with _________.

Answer 19

Cellulose

Question 20

known as an important source of natural bioactive compounds for antibiotic,
antiviral, antioxidant, anti-inflammatory, and cytotoxic purposes.

Answer 20

Spirogyra

Question 21

A species under Chrysophyta that causes fish kills.

Answer 21

Prymnesium parvum

Question 22

The common name of Synura

Answer 22

Golden-brown algae

Question 23

The common name of Prymnesium parvum

Answer 23

Golden algae

Question 24

Golden algae that is a primary source of food for zooplanktons

Answer 24

*Synura* sp.

Question 25

Algae under Chrysophyta

Answer 25

- Diatoms - Golden-brown algae - Yellow-green algae

Question 26

Algae that is responsible for 20% of global carbon fixation and marine primary productivity.

Answer 26

Diatoms

Question 27

Diatoms are used for filtration. True or False

Answer 27

True. The fine structures of diatom shells trap foreign particles in fluids such as dirt, lint, hair, and some other microscopic organisms.

Question 28

________ are often used to filter water, particularly water in hot tubs and swimming pools.

Answer 28

Diatoms

Question 29

Chrysophyta is under what kingdom?

Answer 29

Kingdom Protista

Question 30

What algal group does the fire algae belong to?

Answer 30

Pyrrophyta

Question 31

Pyrrophyta is also called as _________________.

Answer 31

Dinoflagellates

Question 32

Dinoflagellates are eukaryotic. True or False

Answer 32

True

Question 33

Despite being red in color, dinoflagellates are photosynthetic. True or False

Answer 33

True

Question 34

The cell wall of dinoflagellates are made with ____________.

Answer 34

Cellulose

Question 35

The reserve material of dinoflagellates.

Answer 35

Starch

Question 36

Pigments that the dinoflagellates have (5)

Answer 36

- chlorophyll A - C1 - C2 - pyridinine - fucoxantin

Question 37

Species under Pyrrophyta

Answer 37

*Gonyaulax* and *Gymnodium*

Question 38

____________ are responsible for red tides.

Answer 38

Dinoflagellates

Question 39

Dinoflagellates secrete neurotoxins and cause __________ in humans.

Answer 39

Paralytic shellfish poison (PSP)

Question 40

_________ affects the nervous system and paralyzes muscles

Answer 40

Biotoxin

Question 41

Some taxonomists classify this algae under bacteria

Answer 41

Cyanobacteria

Question 42

Cyanobacteria can produce their own food and oxygen. True or False

Answer 42

True

Question 43

Cyanobacteria that can be used as fertilizer in rice paddies. (4)

Answer 43

- *Nostoc* - *Anabaena* - *Oscillatoria* - *Spirulina*

Question 44

Why are some cyanobacteria used as fertilizers in ride paddies?

Answer 44

They fix nitrogen from the atmosphere.

Question 45

Most species of algae are not harmful, but sometimes certain types blood and produce toxins in excessive amounts. True or False

Answer 45

True

Question 46

Excessive amounts of toxins produced by algal bloom can cause harm to human and pet health, aquatic ecosystems, and local economies. True or False

Answer 46

True

Question 47

Examples of blue-green algae that produce toxins capable of causing illness in humans and animals.

Answer 47

- *Microcystis* - *Aphanizomenon*

Question 48

Illnesses caused by blue-algae toxins.

Answer 48

- Gastroenteritis - Neurological disorders - Cancer (possibly)

Question 49

Examples of blue-green algae (8)

Answer 49

- *Oscillatoria* - *Anabaena* sp. - *Pseudoanabaena* sp. - *Calothrix* sp. - *Synechocystis* sp. - *Limnothrix* sp. - *Nostoc*

Question 50

Some cyanobacteria are beneficial, and serve as sources of food in some countries. True or False

Answer 50

True

Question 51

Species of blue-green algae that are cultivated and consumed as foodstuff in some countries like China and Brazil

Answer 51

Nostoc

Question 52

Cyanobacteria is the eukaryotic. True or False

Answer 52

False

Question 53

Cyanobacteria is the only algal group that is prokaryotic. True or False

Answer 53

True

Question 54

Protists that are widespread inhabitants of fresh and marine waters, surface of soil, rocks, and plants, hot springs, and snow banks.

Answer 54

Algae